Bio-CO2 fertiliser system for vigorous and beautiful aquarium plants in freshwater aquariums with 40-110 l

  • Supplies aquarium plants with their main nutrient CO2, for healthy & vigorous growth while preventing algae
  • Easy to assemble: mix the bio-components with water in the reaction canister, connect the hose with the backflow protection and the reactor. Place the reaction canister in the thermal casing – done
  • Natural: CO2 production through biological fermentation process. Economical: 2x40 days of unwavering CO2 production through an immediate and long-term buffer system. Bio-components can be purchased individually for refilling
  • No CO2 pressurised cylinder necessary. The system works exclusively through a biological process in a high-quality, transparent reaction vessel. The glass diffuser enables almost loss-free CO2 enrichment of the aquarium water
  • Packaging contents: ready-to-connect Bio-CO2 fertiliser system, incl. reaction canister, thermal casing, 2x bio-components, 3 m special CO2 hose, suction holder, backflow protection, expandable reactor
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Price: 52,15 €
Recommended retail price incl. VAT
You can find this item in your specialist and online shop
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CO2 cylinder
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Product information

Nutrition for aquarium plants
Plants provide the aquarium with vital oxygen for your aquarium inhabitants, prevent algae growth, remove pollutants, provide hiding places and reduce germs. The plant fertiliser system supplies the plants with the main nutrient CO2 through the water. The plants absorb this and convert it into sugar and oxygen in photosynthesis with the help of light.

The difference between Bio-CO2 and pressurised gas cylinder CO2 systems:
Bio-CO2 systems are based on the biological process of yeast fermentation in which CO2 is produced. Here 2 bio-components are made to react in a bottle/reaction vessel. To replenish the system after about 40 days, the reaction bottle/vessel only needs to be refilled with water and the two bio-components.
In the CO2 pressurised gas cylinder system, the CO2 gas is present at about 60 bar in steel pressure cylinders. When they are empty, they can be refilled by a specialist retailer (reusable cylinders, M system) or they are disposable cylinders (U system) which are simply replaced.

It makes no difference to the plants where the CO2 comes from, whether it is from biological or pressurised cylinder systems. They grow much stronger as soon as a CO2 system is installed. The systems are of more concern to the aquarists, who have to decide whether they want disposable cylinders, refillable pressure cylinders or a pressureless bio system.

In addition to CO2 fertilisation, it is important you don’t neglect the other components that are necessary for healthy & vigorous growth of the aquarium plants: the right light (e.g. JBL LED SOLAR); sufficient fertilisation with minerals & trace elements (JBL PROFLORA FERROPOL); preferably a root fertilisation for strongly rooting plants with JBL PROFLORA FERROPOL ROOT/ The 7 Balls; the right water temperature (usually between 23 and 26 °C); and the absence of plant-eating fish.



Art. no.:
EAN Code:
40-110 l
Volume packaging:
5.73 l
Gross weight:
1315 g
Net weight:
1011 g
Weight factor:
Packaging dimensions (l/h/w):
95/305/198 mm


Animal species: Arowana, Axolotl, Barbels, Bettas, Bichirs/reedfish, Blowfish, Catfish, Cichlids (South America), Crayfish, Danions, Discus, Dwarf shrimps, Flowerhorn, Goldfish, Gouramis, Guppy, Juvenile fish, Killifish, Livebearers, Loaches, Panchaxes, Rainbowfish, Snails, Spiny eels, Tetra, Veiltails, freshwater butterflyfish
Animal size: For all animal sizes
Animal age group: All aquarium fish
Volume habitat: 40-110 l
Material: Plastic, nutrient mixture, yeast
Colour: transparent / black
Dosage: see instruction manual

Electronic label / illuminant

Mercury: No
Dimmable: No

Technical Data

capacity from - to:40-110l
capacity in days:80 d
Height:250 mm
Length:90 mm
Width:90 mm
May the JBL PROFLORA CO2 products only be used for the aquarium?

Yes, the JBL PROFLORA CO2 products are designed exclusively for use in the aquarium. The gas contained promotes plant growth and works with fine precision so that even the smallest quantities can be supplied to the aquarium. Constant operation and the safety of the fish are thus guaranteed.

Should I use several check valves on my CO2 installation?

True to the motto, better safe than sorry, some aquarists install several check valves in the same circuit. For example, if you use the JBL PROFLORA direct inline diffuser or the JBL PROFLORA CO2 Count Safe bubble counter, you already have an integrated check valve. If you also use a separate check valve (JBL PROFLORA SafeStop), there may be problems with the opening of the check valves. This effect can be observed if, after the night switch-off or interruption of the supply with the controller, the addition does not restart automatically. Please note that, depending on the working pressure and the number of bubbles, a few minutes may pass between the start of the supply and the visible entry of CO2 into the aquarium.
Each spring in a check valve needs a certain pressure to be opened. Several springs can therefore interfere with each other and, depending on the distance between the two check valves, reduce the pressure at the spring to such an extent that it remains closed. Therefore, please always use only one check valve for your CO2 installation.

What is the minimum working pressure I need to use the JBL CO2 accessories?

All check valves or backflow protectíons from JBL require a working pressure of at least 0.6 bar for the valve to open. This feature can be found in the JBL PROFLORA CO2 TAIFUN SAFESTOP, COUNTSAFE and INLINE. The JBL PROFLORA TAIFUN diffusers also all already work with this pressure. A higher working pressure is not necessary, which is why all accessories also work with the JBL PROFLORA BIO SETs (except JBL PROFLORA CO2 STARTER BIO SET). Due to installation, a slightly higher working pressure than 0.6 bar may be necessary due to long hoses and other components, which is why the presetting of 1.2 bar is sufficient in any case.

Blog (opinions & experiences)

Perfect aquarium plant growth - very complicated or really simple?

"The fish excretion in the water fertilises the plants!" This is not wrong, but it is only part of the truth!

Find out more

How a CO2 fertiliser system works

With the help of a CO2 fertiliser system you can increase the CO2 content in your aquarium water and lower the pH value. You have the choice between a "Bio-CO2" system and a CO2 fertiliser system with a pressurised gas cylinder.

Find out more

What factors lead to perfect plant growth?

Vigorous and healthy plant growth in the aquarium is of course never based on just one factor. It is always the interplay of light, heat, fertiliser and the main nutrient carbon dioxide (CO2).

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Why is CO2 such a good help when combating algae?

Algae are plants, but only very simple Algae are plants, but only very simple ones. CO2 fertilisation promotes the growth of the more complex plants and algae have no chance against them!

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Fertilise your aquarium plants with a BIO CO2 system - get started quickly and at a reasonable price

The JBL PROFLORA CO2 BIO system offers you a choice of 3 variants which produce CO2 via a biological sugar-yeast reaction.

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CO2, also called carbon dioxide, is the main nutrient for all plants.

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New Bio-CO2 products from JBL

Owners of small aquariums (10-40 l) have the chance to see their aquarium plants growing stronger, faster and more beautiful, almost jumping out of the tank for joy when CO2 is added, and all without great expense. A small aquarium doesn’t need a large CO2 system. That’s why we’ve developed the new JBL PROFLORA CO2 STARTER BIO SET.

Find out more
Reference guide (Themeworld)

Plant growth

Are your aquarium plants growing as well you want? Here’s how to achieve perfect plant growth

Reducing problematic water values

How to lower critical water values.

Deficiency symptoms

Here’s how to prevent deficiency symptoms in fish and plants

Algae control

Here’s how to combat algae successfully and lastingly.

Plant care

What maintenance measures do your aquarium plants need?

Daily care

How much daily or weekly care is involved? What are the basic maintenance measures for your aquarium?


Why is CO2 so important for plant care? What benefits does CO2 fertilisation provide?


Why do aquarium plants need to be fertilised?

Plant species

Which plant species suit your aquarium? What demands do the individual species have?

Installation technical items

How and where in the aquarium do you fix and install technical items? Tips and tricks for the installation of all technical aquarium products


Which aquarium plants are best? What’s the best way to plant them?

CO2 plant fertilisation

How important is CO2 plant fertilisation? Why do your plants need additional CO2? How does a CO2 system work?

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safety instructions

  • safety instruction for accessories
    • Filename:
spare parts
Customer reviews


Overall rating: 4.4
9 public review(s) for this product.

1 Review


This is a great product for beginners! CO2 is really essential in heavily planted tanks! If you want to see the effects of CO2 in the health of your plants, you have to try it...

8 more reviews in other languages

8 Reviews in other languages

S. Tejera Galindo - Spanish

Es un producto que me ha sorprendido para bien por la facilidad a la hora de montarlo. Los materiales son de buena calidad y es muy intuitivo. Lo único que destacaria a mejorar, es el difusor de Co2 ya que le cuesta un poco sacar busbujas en la totalidad de la placa. En mi caso al menos, solo saca burbujas por un lateral.

M. Deboo - Dutch

Ik gebruikte eerder Easycarbo, maar mijn Vallisneria deed het niet goed. Nu heb ik mij de JBL proflora advanced aangeschaft, en dit werkt prima. Nu groeit mijn vallisneria heel goed.

De montage aan het glas van het aquarium zorgt voor de geschikte temperatuur in het reactievat, de belletjes in de diffusor zorgen voor een gelijkmatige toevoer van CO2. Ik ben dus heel tevreden over dit product.

Ragnarshrimps - French


Système de CO2 facile à mettre en place, va parfaitement pour mon bac de 50 litres et les plantes poussent super bien

D. Van Hengel - Dutch

I used this bio co2 set in one of my tanks for a few weeks but it's not stable. The co2 is coming out sometime high amount and then lower. If you have fishes or shrimps in the tank I don't recommend it because it's going 24/7. For only plantedtank this is not a problem.

But the bio is definitely not the stable co2 you would expect. I did no longer then 21 days with one fill up.

Comment from JBL:

Hi Daniel,

thank you for your feedback.

The 24/7 production is no problem. The amount is low so you will create a depot by night and enough for the day. The critical point of more than 30 mg/l will not get reached in the recommended tank size. It will be stable with a good room temperature of 23 °C or by using the basket beside the tank to use its temperature. So feel free to try it again.

diskusliebe - German

Ich habe an zwei Becken das Advanced Bio Set und bin sehr zufrieden ! Der Aufbau und die Installation sind wirklich einfach, besonders hat mich gefreut, dass ein Taifun Glass Diffusor dabei ist. Ich finde das sieht im Becken einfach optisch schöner aus. Die Anlage ist eine gute und preiswerte Alternative zu einer Druckgasanlage und für ein normal bepflanztes Becken vollkommen ausreichend.

aquasebi - German

Zum testen welche wirkung Co2 auf eure Pflanzen hat finde ich es eine gute und günstige alternative. Alerdings würde ich für diue dauerlösung auf Druckgas setzen.

Thomas_aquascapingcz - Czech

Super product, you want to try Co2 and you don't want to invest big money in the whole Co2 pressure system. It took a while for the device to pressurize, but then it was the same, but if it lasts the guaranteed 80 days, I can't confirm it yet, otherwise I recommend it.

Aquamahh - French

For those who want to try CO2 and starting in this hobby, this this the best set 👏

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