plant fertilization- Invented by nature

Experience nature

Why does my aquarium need CO2?

fertilization - Invented by nature

All plants need carbon dioxide (CO2) in order to grow and survive.They produce their most important building material - sugar - fromCO2, water and light. All animals require oxygen, which occurs asa "waste product", in order to breathe. This process – which isknown as photosynthesis – is the basis for all life on our planet.Aquatic plants use the CO2 which is dissolved in water. A constantsupply of CO2 is forthcoming from the thick bed of mud which is usually to be found in natural waters. It is produced in large quantities here as a result of bacterial degradation processes. Thestrong and healthy plants which exist in nature are the result of thisrich supply. And lush plant growth supplies fish with oxygen whilealso offering them places to hide and spawn.

Aquarium water is nearly always deficient in CO2. Natural CO2 hasalready been removed from the water which flows out of our taps atthe waterworks, by means of aeration. The aquatic plants hungrilydevour the minimal quantities which exist in the aquarium. The available supply is usually insufficient. As a result, stems and leavesappear weak and pale, with no sign of growing power. The plants’resistance is weakened, algae settle on the leaves. In contrast to natural environments, the natural source of supply is lacking in aquaria. But who wants a centimetres-thick layer of sludge consistingof dead leaves, fish excrement and food residues in their aquarium?

Magnificentplants, healthy fish – with CO2!

Without CO2! With CO2!

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CO2 deficiencyhas serious consequences

CO2 fertilizationhas many otheradvantages

• Stunted and crooked growth• Sudden plant death• Lime deposits on leaves• Much too high, unnatural pH values This results in stress for fish

and an increased susceptibility to disease• Iron and trace element deficiency• Sudden ammonia poisoning• Algae infestations

• Part of the CO2 which dissolves in water forms carbonic acid.This means that CO2 can be used to lower the pH value (acidcontent) of the aquarium water slightly, to levels similar to thosewhich prevail in nature.

• Aquarium fish are particularly fond of slightly acidic water. Ithas a positive effect on their sensitive skin.

• Trace elements which are important for plants and fish are takenin more effectively, as they are more readily soluble in theslightly acidic pH range.

• Unsightly lime deposits are avoided on plant leaves ("biogenicdecalcification").

The required supply of CO2 depends on thetype of aquariumHigher requirement Lower requirement

Higher requirement Lower requirementLarge aquarium Small aquariumOpen aquarium Covered aquariumLarge surface area/ Small surface area/volume ratio volume ratioPlenty of light Minimal lightMany plants Few plantsFast-running filter Slow-running filterHigh level of water movement Low level of water movementAdditional aeration Without aeration

In aquaria with flourishing aquatic plants, troublesome algae have practicallyno chance. Nutrients conducive to algae growth, such as phosphates and nitrates, are "absorbed" immediately by the plants. Plant growth starts to flagwhen CO2 is lacking, however. Surplus nutrients are no longer consumedquickly enough and algae are able to flourish.That’s why a good stock of plants and regular CO2 fertilization are among themost important measures to prevent algae.

T IP Good plant growth = no algae

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How much CO2does my aquarium need?

CO2 sets for nano aquaria

Which is the right CO2 system for me?

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Various systems are available to supply anaquarium with CO2. These differ with regard to the source of CO2.

Dennerle offers complete sets and accessories for all systems

BIO-CO2 - the simple means of CO2 fertilization

DISPOSABLEsystem the practical means ofCO2 fertilization

REUSABLE system the sustainable meansof CO2 fertilization

There are two basic categories of system:

1. Bio CO2 systems: Here the CO2 is generated by means of yeast fermentation, and

2. CO2 systems with liquefied gas, which come in disposable and reusable variants

CO2 production on the basis of controlled and constant yeast fermentation. Ideal for all those who are unfamiliar with CO2 fertili-zation and anyone wishing to try the method out. After only a fewweeks of CO2 fertilization, the results become evident: Plant growthimproves substantially, the plants appear greener, stronger and display greater vitality. The whole aquarium is brought to life.

CO2 supply by means of liquefied gas in a recyclable disposable cylinder. Ideal whenever replenishing CO2 cylinders is awkward orthe nearest CO2 filling service is far away.

CO2 supply by means of liquefied gas in a refillable, reusable cylinder. Particularly suitable for very large aquaria and aquariawith a high CO2 requirement. Dennerle offers reusable cylinders ofup to 2 kg for such applications.

Even the smallest aquaria need CO2. Dennerle offers solutions here which are tailored specifically to the requirements of mini aquaria.

How do CO2 systems work? - Bio-CO2

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What is needed in orderto set up a CO2 supply foran aquarium?

The essential mode of functioning: A solution containing sugar isfermented in a fermentation container by means of yeast. CO2 isproduced as a by-product of this fermentation process. This CO2 isconveyed via a CO2 hose to the bubble counter, then on to the diffusor and into the aquarium. This method of CO2 supply is only suitable for aquaria with a volume of up to approx. 120 litres, however.

Uniform CO2 production with CO2 control gel.A fermentation process with pure sugar normally begins at a very fast pace, only to drop away sub-stantially after just a few days. As a result, the aquarium receives too much CO2 at the beginning,and too little shortly after. In contrast, Dennerle Bio CO2 with CO2 control gel produces a virtuallyconstant level of CO2 continuously for over 30 days, that is, for more than a month! Each CO2 bottleproduces well over 300,000 CO2 bubbles. This assures your aquarium of an ideal supply of CO2every day. Nothing needs to be set or measured. The ultimate in simplicity and convenience.

CO2 production with CO2 control gel

CO2 production with conventional products

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The trick with the thermo containerBio CO2 systems produce more CO2, the warmer it is. The thermocontainer in the Dennerle CO2 Plant Fertilizer Set Bio 120 adaptsCO2 production automatically to the aquarium temperature. Aqua-ria with a higher temperature also have a higher CO2 requirement.

TIP

CO2 Plant Fertilizer Set BIO 120

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CO2 Plant Fertilizer Set BIO 120

What complete sets are available?

BIO StarterBIO Starter

BIO 60BIO 60

For aquaria of up to 120 litres. The Bio-CO2 fertilizer system for the very highest requirements. Idealfor aquaria between 60 and 80 cm. With CO2 bottle for automaticCO2 fertilization over more than 30 days.

Complete set, comprising: Thermo container, CO2 bottle, starter capsule, bubble counter, CO2

hose, CO2 Mini-Flipper, Perfect Plant Fertilizer Set system

Other Bio CO2 sets:The nice-price starter set

Complete set, comprising: Bottle support, CO2 bottle, starter capsule, CO2 hose, Mini-Topper.

For aquaria up to 60 lThe professional Bio CO2 set with high-tech Micro-Flipper CO2

diffusor

Complete set, comprising: Bottle support, CO2 bottle, starter capsule, CO2 hose, bubble counter, Micro-Flipper.

How do CO2 systems work?- Liquefied gas

What is needed inorder to set up aCO2 supply for anaquarium?

Additional accessories are availablefor monitoring and automatic controlof the amount of CO2 supplied

The CO2 cylinder may take the form of • a disposable cylinder for nanoaquaria

• a practical and convenient disposable Dennerle CO2cylinder or

• the classic refillable, reusableCO2 cylinder.

This is the core element of everyCO2 fertilizer system. The pressurereducer determines how simply andaccurately the desired amount ofCO2 to be supplied - the number ofCO2 bubbles - can be set and howconsistently and reliably the systemwill run in the long term.

The special Softflex CO2 hosefrom Dennerle prevents the CO2losses which are typical of conventio-nal hoses.

A liquefied gas CO2 system essentially comprises CO2 cylinder pressure reducer CO2 hose check valve CO2 diffusor

Primus Quantum

Space

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1 The CO2cylinder

1 The CO2cylinder

2 The pressurereducer

2 The pressurereducer

3 The CO2 hose3 The CO2 hose

The special CO2 check valveprovides all connected CO2 devices(e.g. pressure reducer, solenoidvalve) with reliable protection fromcorrosion caused by backflowingwater.

Setting the right amount of CO2 ischild’s play with the CO2 bubblecounter Exact.

...ensures that the CO2 is dissolvedquickly and effectively in the aqua-rium. Because plants can only usethe CO2 when it is dissolved in thewater. The Dennerle Flipper isone of the most effective diffusors,as the CO2 bubbles pass through amulti-stage system here, ensuringthat they have plenty of time to dissolve in the water. The Flipperadditionally features an integratedbubble-counting function and an automatic waste gas vent.

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4 The checkvalve

5 The bubblecounter

Waste gas ventEvery time a CO2 bubble dissolves in the water, it is penetrated byother gases (e.g. nitrogen) which are naturally present in the aquarium water in dissolved form. Consequently, all Dennerle CO2diffusors feature a waste gas vent, designed in each case for thesystem concerned. Here the waste gases are separated from thesubstantially heavier CO2 and discharged automatically at regularintervals. This effectively prevents the equipment from becoming"choked up" with waste gas. As a result, Dennerle CO2 diffusorsoperate highly effectively. The best possible use is made of the valuable CO2.

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6 The diffusor

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The CO2 long-term test Correct offers the simplest meansof CO2 monitoring. A "green" reading indicates that the level ofCO2 in the aquarium water is ideal.

For disposable and reusable sys-tems, the Dennerle CO2 solenoidvalve provides the option of shut-ting down the supply of CO2 atnight by means of a time switch, asplants do not consume any CO2 atnight. This saves valuable CO2.

The Evolution DeLuxe pH controller is available from Den-nerle for high-tech aquarium enthu-siasts. This controller continuouslymeasures the pH value in the aquarium and controls the neces-sary supply of CO2 fully automatic-ally. It supplies just enough CO2 tomaintain the set level at all times.

7 Accessoriesfor monitoringCO2

8 Accessoriesfor savingCO2

9 Accessoriesfor fully automatic CO2monitoringand control

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The ideal system for every aquarium Dennerle's own research and development department and deca-des of experience with its own plant nursery provide it with the ne-cessary know-how on all aspects of CO2. This enables Dennerle tooffer all the components which are necessary for simple, safe andreliable CO2 fertilization - from the CO2 cylinder to the CO2diffusor. In particular, DENNERLE offers a broad choice of completeCO2 sets which have been put together in accordance with practical requirements, ranging from sets for aquaria as small as 10l to large-scale aquaria. Dennerle offers the ideal CO2 system forevery aquarium and every budget - from beginners through upgraders and professionals to experts.

CO2 fertilizersystems fromDennerle

• Simple to install• Reliable supply of CO2

• For fantastic plantgrowth

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All Dennerle CO2 fertilizer systems consist of perfectly coordinatedcomponents. This ensures simple operation and reliable functioning.Possible faults are prevented automatically.

Waste gases, for example, which disturb the mixing of CO2and water. Although the CO2 diffusor apparently still contains CO2,a deficiency occurs. To combat this problem, all Dennerle CO2diffusors possess an automatic waste gas vent.

Modular design

CO2 system

CO2 system + night cut-off valve

CO2 system + night cut-off valve + pH controller

Disposable CO2: The convenient method of CO2 fertilization

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• The system with the practical disposable CO2 cylinder. Dennerle disposable CO2 cylinders are made almost entirely ofmetal. Empty bottles are disposed of in the recycling bin. Theyare 100% recyclable.

• Uninterrupted supply with reserve bottle: With a replacement cylinder in the base cabinet of the aquarium there will be no interruption in CO2 fertilization, should your original bottle runout at the weekend, for example.

• Dennerle disposable CO2: Practical, convenient, user-friendly.

100recycla

ble%

What complete sets are available?

CO2-Plant Fertilizer Set DISPOSABLE 300 SpaceFor aquaria of up to 300 litres. Complete set, comprising: Convenient 500 g disposable CO2 cylinder, pressure reducer Evolution Space, Flipper CO2 diffusor special CO2 check valve, special Softflex CO2 hose, CO2 long-term test Correct, Perfect Plant system fertilizer set (E15 FerActiv, V30 Complete, S7 VitaMix)

Other disposable complete sets comprising a similar range of items:

DISPOSABLE 160 PrimusFor aquaria up to 160 lComplete set, comprising: Convenient 500 g disposable CO2 cylinder, pressure reducer Evolution Primus, Mini-FlipperCO2 diffusor, special CO2 check valve, special Softflex CO2 hose, CO2 long-term test Correct, Perfect Plant system fertilizer set (E15 FerActiv, V30 Complete, S7 VitaMix)

DISPOSABLE 300 QuantumFor aquaria up to 300 lComplete set, comprising: Convenient 500 g disposable CO2 cylinder, pressure reducer Evolution Quantum with bubble count scale and cylinder pressure manometer, Flipper CO2 diffusor, special CO2 check valve,special Softflex CO2 hose, CO2 long-term test Correct, Perfect Plant system fertilizer set (E15 FerActiv,V30 Complete, S7 VitaMix)

CO2 fertilization for nano aquaria

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CO2 Nano Set 80 g Complete

Complete set, comprising: 80 g CO2 bottle (disposable) with stand, pressure reducer Evo-lution Nano, Nano-Flipper CO2 diffusor, special CO2 checkvalve, CO2 hose, CO2 long-term test Correct

CO2 Nano Set 80 g Space

Complete set, comprising: 80 g CO2 bottle (disposable) with stand, pressure reducer Evolution Space, Nano-Flipper CO2 diffusor, special CO2 checkvalve, CO2 hose, CO2 long-term test Correct

Reusable CO2: The sustainable means of CO2 fertilization

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• With reusable CO2 cylinder. • Environment-friendly - avoids waste• Dennerle Reusable CO2: Efficient, economical, tried and tested

over many years.

What complete sets are available?

CO2 Plant Fertilizer Set 600 SpaceFor aquaria of up to 600 litres. Complete set, comprising: Refillable 2 kg reusable CO2 cylinder, pressure reducer Evolution Space with integrated solenoid valve, Maxi-FlipperCO2 diffusor, special Softflex CO2 hose, CO2 long-term test Correct, installation spanner, Perfect Plant system fertilizer set(E15 FerActiv, V30 Complete, S7 VitaMix)

Other reusable complete sets comprising a similar range of items:

CO2 Plant Fertilizer Set 160 PrimusFor aquaria up to 160 lComplete set, comprising: Refillable 500 g reusable CO2 cylinder with stable safety stand, pressure reducer Evolution Primus, Mini-Flipper CO2 diffusor, special Softflex CO2 hose, CO2long-term test Correct, installation spanner, Perfect Plant system fertilizer set (E15 FerActiv, V30 Com-plete, S7 VitaMix)

CO2 Plant Fertilizer Set 300 QuantumFor aquaria up to 300 lComplete set, comprising: Refillable 500 g reusable CO2 cylinder with stable safety stand, pressure reducer Evolution Quantum with bubble count scale and cylinder pressure manome-ter, Flipper CO2 diffusor, special Softflex CO2 hose, CO2 long-term test Correct, installation spanner, Perfect Plant system fertilizer set (E15 FerActiv, V30 Complete, S7 VitaMix)

CO2 Plant Fertilizer Set 300 SpaceFor aquaria up to 300 lComplete set, comprising: Refillable 500 g reusable CO2 cylinder with stable safety stand, pressure reducer Evolution Space with integrated solenoid valve, Flipper CO2 diffusor, specialSoftflex CO2 hose, CO2 long-term test Correct, installation spanner, Perfect Plant system fertilizer set(E15 FerActiv, V30 Complete, S7 VitaMix)

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The latest generation of Dennerle pressure reducers

Precision and safety

The tiny quantities of CO2 involved in fertilizing plants call for extremely precise dosing. Dennerle's newly developed pressure reducers of the Evolution range, comprising Primus, Quantum andSpace, offer cutting-edge technology here. Apart from featuring totally new materials which allow for a more precise productionprocess, the pressure reducers also operate according to a newmode of functioning.

Safety aspects have also received full consideration, with all pres-sure reducers featuring an automatic pressure relief device and asafety vent.

The key feature common to all variants is the innovative Dynamic Valve Control (DVC) technology. This carefully coordinated system of pistons, springs, bores, pressure compensation chambers and valves offers two crucial advantages:

1. The pressure reducers can be adjusted with unprecedented ease and precision by means of a single setting knob.

2. Once set, the supplied quantity of CO2 (number of bubbles) remains stable over a long period.

Reliable and

economical

Why is a good pressure reducer so important?

Number of bubbles according to opening angle(schematic diagram)

Number of bubbles per minute

Opening angle in degrees

Dennerle Evolutionwith Dynamic ValveControl

Conventional pressure reducer

InfoAll the pressure reducers can be used for Dennerle disposable or reusablecylinders, by means of an adapter.

What models are available?

Evolution Primus

Evolution Quantum

Evolution Space

Evolution Nano

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The pressure reducersof the Evolution range: Modern design coupled withfunctionality and precision

Specially designed for nanoaquaria. With connectionthread for 80 g disposable car-tridges from Dennerle.

The top-value entry-levelpressure reducer featuring DVC.With connection thread for Dennerle disposable cylinders.

With bubble count scale andcylinder pressure manometer.With connection thread for Dennerle disposable cylinders.

The first aquarium pressure reducer with integrated sole-noid valve! With connectionthread for Dennerle disposablecartridges (80 g).

A worldfirst

Info Even when using CO2 diffusors with an integrated bubble counter, itis nevertheless extremely practical to install an additional bubble counter close to the pressure reducer.This enables the number of bubbles to be set more simply, quickly and exactly. A separate bubble counter is urgently recommended when using CO2 diffusers without a built-in bubblecounter and diffusors which are hidden behind plants or rocks in the aquarium.

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CO2Nano-FlipperFor aquaria of up to 40 litres

CO2Micro-FlipperFor aquaria of up to 80 litres

CO2Mini-FlipperFor aquaria of up to 160 litres

CO2FlipperFor aquaria of up to 300 litres

CO2Maxi-FlipperFor aquaria of up to 600 litres

What CO2 diffusers are available?

Virtually all Dennerle CO2 system components are based on in-house developments – drawing on practical experience to meet practical needs. Every device hasbeen tested in extensive test series and developed in line with the special conditions which prevail inaquaria. Dennerle is able to draw on decades of experience in this field. As a result, Dennerle CO2components meet the very highest standards with regard to functionality, efficiency, quality of materials and service life.

Various diffusors are available for the most diverse applications andrequirements. The available options and areas of use are describedbelow.

Maximum efficiency: The CO2 FlippersHighly effective, compact CO2 diffusors. With CO2 collector andwaste gas vent. No motor required.

Mode of functioning: The CO2 supplied by the CO2 fertilizersystem is released from the opening at the bottom of the Flipper. TheCO2 bubbles then rise slowly along the channels in the Flipper. Asthe bubbles rise, the CO2 dissolves in the aquarium water - the bubbles thus become smaller as they progress towards the surfaceof the water. Waste gases are separated from any residual CO2 inthe collector and discharged automatically.

Info

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TIPThe bubble counter should ideally be installed in the direct vicinity of the pressure reducer. This has the advantage that any changes to the CO2 supply level will become visible on the bubblecounter immediately. To this end, the Dennerle CO2 bubble counter Exact is supplied with a strap - for direct attachment to the CO2 cylinder!

Why do I need a bubble counter?

CO2 bubble counter Exact

Rule of thumb for basic setting of the number of bubbles:10 bubbles per minute per 100 l of aquarium water. Example - 200 l aquarium: 2 x 10 = 20 bubblesper minute. If the Dennerle CO2 long-term test displays "green", the supply of CO2 is exactly right. If not: Increase the number of bubbles in small daily steps until the desired level of CO2 is attained.

Why do I need a check valve?

Special CO2 checkvalve

Info

Install the special CO2 check valve as closely as possible to the pressure reducer / the CO2 solenoidvalve - ideally at a distance of 5 to 10 cm. It is then easier to set the number of CO2 bubbles, as everyadjustment of the supply quantity is immediately recognisable on the bubble counter. Closure of theCO2 solenoid valve is also immediately evident.

TIP

Continuous, direct control of the CO2supply levelThe CO2 supply rate is measured in terms of the number of bubblesper minute. The Dennerle CO2 bubble counter Exact provides asimple and convenient means of setting the number of bubbles. Itcan be turned in the mounting bracket for optimum alignment. Thewhite reflector bracket enables precise counting of the bubbles evenin poor light conditions - e.g. in the base cabinet. Hose connectorswith screw fittings prevent CO2 leaks.

It reliably protects CO2 units frombackflowing waterCO2 is a special gas which has quite different physical properties toair. Dennerle has thus developed a special check valve for operationwith CO2. The core element is a special permanently elastic, CO2-proof membrane. It is fitted under tension, in firm contact with sea-ling rims. 2 hose connectors with screw fittings ensure CO2-proofconnection.

Special Softflex CO2 hose

Reliable protection from CO2 leaks.

Why are special CO2 hoses necessary?

Why do backflows of water occur in CO2 hoses? Figuratively speaking, CO2 is instinctively "driven" to dissolve in water whenever the opportunity arises.In the event of an interruption in the supply of CO2 to the aquarium (CO2 cylinder empty, cylinder valveclosed, CO2 solenoid valve active, etc.), the CO2 which is presently still in the hose will also dissolve inthe aquarium water. This causes a vacuum in the CO2 hose, drawing aquarium water into the hose. Thespecial CO2 check valve from Dennerle reliably protects your valuable items of CO2 equipment such asthe pressure reducer, CO2 cylinder and CO2 solenoid valve, etc. from backflowing water.

Special Softflex CO2 hose

Softflex is many times more leak-proof than conventional materials

Hose type Annual leakages

Special Softflex CO2 hose several grams

Standard PVC air hose several 100 grams

Silicone hose several 1000 grams

CO2 simply seeps through many hose materials. The special Softflex CO2 hose from Dennerle consists of a special CO2-proofplastic to ensure that valuable CO2 arrives where it is needed - inthe aquarium. The hose is able to withstand pressures of up to 7 barand is highly flexible to facilitate installation.

Info

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CO2 long-term test Correct + pH

How can I monitor the CO2content in my aquarium water?

How CO2, carbonate hardness and pH value are related

Adding CO2 acidifies the aquarium water slightly, lowering the pH value. This means that the pH valueneeds to be watched, to ensure that it does not drop too low. A three-way interrelationship exists bet-ween CO2 content, carbonate hardness and pH value. This enables the CO2 content in the water to becalculated on the basis of the measured carbonate hardness and the measured pH value. These measu-rements, in particular the measured pH value, must be very accurate, however, as the results will other-wise be unusable.

Special CO2 indicator for particularly simple and accurate CO2 controlConventional long-term CO2 tests are filled with a mixture of aquarium water and indicator. This involvesvarious disadvantages, one being that the acids which are present in all aquarium waters (e.g. humicacids, nitrate) can distort test results substantially.The Dennerle CO2 long-term test Correct employs a ready-to-use special CO2 indicator which is used onits own, rather than in a mixture with aquarium water. This offers the following key advantages:

Safety: The CO2 long-term test Correct measures the CO2 content and indicates the actual CO2content correctly at all times - irrespective of any other acids in the aquarium water.

Simplicity: No additional measurement of carbonate hardness is necessary. Only a single colour-mat-ching scale is required.

Accuracy: The CO2 long-term test Correct allows direct determination of the CO2 content in milligramsper litre. The test is equally efficient at low carbonate hardness levels.

Keeping tabs on CO2 at all times!For the continuous, exact control of CO2content in the aquariumThe CO2 long-term test Correct +pH provides a simple and reliablemeans of setting the required rate of CO2 supply. The colouring ofthe special CO2 indicator varies according to the CO2 content from • blue = not enough CO2 through • green = CO2 content ideal to • yellow = too much CO2.

Complete set with test container, special CO2 indicator and six-colour matching scale.

The CO2 long-term test Correct even allows you to monitor the pHvalue in your aquarium at the same time! Simply measure the carbonate hardness and read the pH value from the colour matchingscale.

Info

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pH controller Evolution Deluxe

TIPFor magnificent plant growth, Dennerle recommends a CO2 content in the aquarium of approx. 20 mg/l. The correlation between CO2 content, carbonate hardness (CH) and pH value enables theCO2 content in the water to be calculated according to a simple procedure:• Measure the carbonate hardness of your aquarium water.• Read the pH value which corresponds to the desired CO2 content from the table. You should set this

pH value +/- 0.1 by adjusting the number of bubbles accordingly. Example: Carbonate hardness 4 °d, recommended pH 6.8.

• The procedure is even simpler with the Dennerle CO2 long-term test Correct + pH.

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CO2 content

pH value

Too much CO2 CO2 correct Not enough CO2

CO2 night cut-off valve

What are the benefits of a solenoid valve?

CO2 solenoid valve

CO2 time switch

TIPSimply connect the CO2 night cut-off valve to the time switch which controls your aquarium lighting, as the plants only need CO2 when "the sun is shining" in the aquarium.

(actual switch similar to model shown)

CO2 night cut-off valve Comfort

Using a solenoid valve saves valuable CO2The Dennerle CO2 cut-off valve Comfort is a CO2 solenoid valve forprecision control of the CO2 supply. The DENNERLE CO2 night cut-off valve enables automatic control ofthe CO2 supply in either of two ways, thereby saving valuable CO2every day:

A With a time switch:The time switch cuts off the supply of CO2 overnight, as aquarium plants do not require any CO2 during the night.

B With the Dennerle pH controller Evolution DeLuxe:This controller continuously measures the pH value in the aquarium and controls the required supply of CO2 automaticallywith electronic precision.

The CO2 night cut-off valve for excellent performance• Energy-saving - power consumption only 2.4 W• Splash-proof in accordance with IPX4 - for your safety• With indicator lamp - lights up when CO2 is being supplied

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Functions:

Simplicity itself to use

1 button = 1 function

Confirmatory beep

Setting the requiredvalue

Maximum user-friendliness

User-friendly calibration

Calibration reminder

Automatic pH setting

Selectable switchingvalues

Dimmable display

Maximum safety

Indicator lamp forCO2 supply

Alarm function

Acoustic alarm

Keypad lock

pH controller Evolution Deluxe

CO2 control with electronic precisionThe pH controller Evolution DeLuxe forms part of Dennerle's top-of-the-range CO2 control system. It measures the pH value in the aqua-rium continuously by electronic means and controls the supply ofCO2 automatically via the connected solenoid valve (Dennerle CO2night cut-off valve).

This completely digital precision device offers the ultimate in functio-nality, safety and user-friendliness. Using the device is simplicity it-self: 1 button = 1 function.

The pH controller operates both in the acidic range (e.g. discus fish),the slightly acidic range (e.g. community tropical aquarium) and thealkaline range (e.g. Malawi/Tanganyika aquaria, sea water).

The controller is completely splash-proof in accordance with the latest statutory requirements.

Ideal conditions for fish and plantsThe Dennerle pH controller Evolution DeLuxe ensures that all aqua-rium plants receive precisely the right amount of CO2. Fish benefitfrom a stable pH value attuned to their specific needs - the basis fora magnificent, healthy aquarium.

Scope of delivery: pH controller Evolution Deluxe, Profi-Line pH electrode, electrode holder, pH 4 calibrating solution, 50 ml, pH 7 calibrating solution, 50 ml, Aqua dest., 250 ml, calibrating station

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Accessories - pH controller

pH electrodeFor continuous measurement of the pH value in freshwater and sea water aquaria

Any measuring instrument can only be as accurate as the connectedsensor. The pH electrode is thus a vitally important part of the pH measuringdevice.• Modern, low-maintenance gel electrode• With Quali-Safe electrode protector - ready for immediate use• High measuring accuracy• Break-proof plastic stem• With 3 m cable and BNC connector

pH electrode holderFor secure attachment of the pH electrode in the aquarium

• High-quality plastic• With light shield to prevent algae formation• Extends the service life of the pH electrode

Calibration station For the user-friendly calibration of pH electrodes

The Dennerle calibrating station enables particularly fast, reliableand convenient calibration of the pH electrode. It can be hung onthe aquarium cover - particularly practical when electrode cablesare firmly installed! The calibrating station requires only the tiniestamounts of valuable calibrating solution. This makes it extremelyeconomical.

pH electrode

TIPAlways use fresh calibrating solutions and calibrate the pH electrodes in separate, clean receptacles, ideally in the Dennerle calibrating station. Discard used calibrating solutions. Do not carryout calibration in the supply bottles.

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LABORA-TORY

STANDARD

LABORA-TORY

STANDARD

pH electrode holder

Fascinating aquascapes. From Dennerle – naturally!

Dennerle GmbH

D-66957 Vinningen

www.dennerle.eu

5107

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Experience nature