Recommended products in the "CO2 In Aquarium" section
We have products in the range "CO2 In Aquarium" compared with each other and put together recommendations for you. Here you will find the top 15 in the “CO2 In Aquarium” section.
CO2 In Aquarium – the most important things at a glance
CO2 systems play an essential role in plant growth in aquariums, as they supply the carbon dioxide that is essential for photosynthesis. There are different types: organic CO2 systems that produce CO2 from yeast and sugar, disposable CO2 systems with non-refillable cartridges and reusable CO2 systems with refillable CO2 bottles. Bio-CO2 systems are considered simple and inexpensive, but produce CO2 irregularly and are therefore more suitable for smaller aquariums. Single-use systems are more expensive and not sustainable, but they deliver a constant amount of CO2 and changing the cartridge is easy. Reusable CO2 systems are the most sustainable option, but they are expensive to buy and require more work to refill. Regardless of the system, a pressure regulator is essential to regulate the flow of CO2 and a diffuser to distribute the gas effectively throughout the aquarium.
The bestsellers in the field of "CO2 In Aquarium"
A list of the best sellers under the category "CO2 In Aquarium" you can find here. Here you can find out which products other users have bought particularly often.
Bestseller no. 1 
MICROBE-LIFT Bio-CO2-118 ml - Innovative liquid CO2 fertilizer. Promotes plant growth in freshwater aquariums with microbes & humic acid, free of nitrates.
- BIO-CO2: A specially developed microbial source of carbon from beneficial bacteria and humic acid for simple and effective CO2 fertilization of aquarium plants in any freshwater aquarium. It is ideal for combining with the MICROBE-LIFT fertilizer series.
- HOW IT WORKS: The useful bacteria contained produce CO2 available for plants from the humic acid also contained in a biological process.
- GROWTH & COLORS: Bio-CO2 promotes healthy plant growth and intensifies the colors by optimizing the nutrient uptake in plants.
- APPLICATION: Starting dosage: Add 10 ml BIO-CO2 to 100 liters of water on the first day. Subsequent dosage: Add 1 ml to 2 liters of water every 2-100 days. Note: The dosage depends on the number of plants, density and size and can be slowly increased depending on plant growth.
- MICROBE-LIFT- Is one of the world's leading brands in the care and supply of seawater and freshwater aquariums and ponds. The products are among the most popular and effective on the market. All products are subject to very strict control and quality management to ensure consistently high quality.
6,90 EUR 
View product Bestseller no. 2 
sera CO2-Start - For getting started with CO2 fertilization
- for co2 supply for aquariums from 60 to 120 liters
- addition of co2 through co2 tablets
- practical and uncomplicated co2 fertilizer system
- the co2 tabs are simply placed in the shaft of the co2 diffusion reactor
- each tablet then releases approx. 100 ml (equivalent to 2500 counting bubbles) of co2 when it comes into contact with aquarium water
- sera co2 start
- plant care accessories
- aquaristic
- fish food
- ornamental fish food; Which components are included in the scope of delivery of the product: a sera CO2 starter set
- sera Co2 start
- Plant care accessories
- Aquaristics
- fish food
- Ornamental fish food
Bestseller no. 3 
ARKA mySCAPE-CO2 Checker Liquid - 15 ml - Reliable CO2 monitoring with color display. Essential for precise aquascaping in freshwater aquariums.
- ARKA mySCAPE-CO2 REFILLER: A CO2 test liquid with a color change, ideal for use in a corresponding CO2 endurance test, such as the ARKA mySCAPE-CO2 Checker.
- CONTENTS: 15 ml CO2 indicator liquid.
- COLOR CHANGE: The CO2 test liquid shows the respective status of the CO3 supply in the aquarium using 2 different colors. YELLOW = too high, GREEN = optimal range, BLUE = too low.
- UNIVERSAL: The indicator solution is ideal for use with a CO2 test, such as the ARKA mySCAPE-CO2 Checker from the ARKA mySCAPE-CO2 system or other commercially available CO2 testers.
- ARKA BIOTECHNOLOGIE GMBH - Deals with the development, production and worldwide distribution of innovative products from aquaristics to do-it-yourself needs and accessories for dogs, cats and rodents.
5,90 EUR
View product ServicesBestseller no. 5 
Tetra CO2 Plus liquid carbon fertilizer for magnificent aquarium plants, 250 ml bottle
- Biological release of CO2 up to a week
- Aquarium plants develop stronger and healthier
- Simple application without additional tools
- Vigorous plant growth is the best way to prevent algae
5,89 EUR
View product Bestseller no. 6 
sera CO2-Tabs Plus 20 tabs (90 g) - CO2 fertilizer tablets for the CO2 diffusion reactor
- Tablets for sera CO2 start or plant care set
- The CO2 tabs are simply placed into the shaft of the CO2 diffusion reactor
- Each tablet then releases approx. 100 ml (corresponding to 2500 counting bubbles) of CO2 when it comes into contact with aquarium water
6,99 EUR
View product Bestseller no. 7 
JBL 2541600 quick test for determining the carbon dioxide content in freshwater aquariums, CO2 Direct test set
- Simple and safe control of the water parameters in aquariums. Determination of the optimal carbon dioxide content for freshwater and seawater aquariums.
- Color change test: fill the plastic cuvette with sample water, add the reagent drop by drop until the color changes. Number of drops = amount of carbon dioxide.
- Duration of use for green algae problems, non-growing plants or fish kills: once a week.
- JBL online laboratory: Regular checks for a healthy aquarium with conditions close to nature. For every water analysis, JBL offers water tests in the form of quick tests or color change tests. Test aquarium water for healthy, clear water.
- Scope of delivery: 1 JBL quick test 25416, CO2 direct test set. Incl. 2 reagents, plastic cuvette and color chart. Refill reagent sold separately.
ServicesBestseller no. 8 
Aquarium, Aquarium Co2 Tablet Aquarium Plant Co2 Aquarium CO2 Tablet, for Aquarium Aquarium Aquarium
- Place it in a different position in your aquarium, a quick solution for your plants, easy to absorb, safe and no harm.
- Increase the CO2 level of the aquarium, improving the efficiency of photosynthesis and making plants grow better.
- Simple and convenient way to provide CO2 for your aquarium plants to thrive. If you put the tablet in a CO2 nebulizer, it can achieve a better effect.
- Also important for fish farming, better living conditions offer your fish a healthier habitat.
- Simply drop the CO2 tablet into the aquarium water. Use one tablet for 20L of water once or twice a week.
Bestseller no. 9 
FZONE 17mm CO2 diffuser | Works with All CO2 Systems | litersBespoke ceramics |More porous membrane| Finest CO2 Bubbles|Ultra Clear Acrylic - Made in South Korea （M-17mm）
- The custom-made ceramic from South Korea used in the Fzone NEO diffuser has microscopic holes, resulting in very fine and thorough air bubble diffusion. It ensures a high level of CO2 saturation in your aquarium. The fine Co2 mist breaks down easily in the water column and is absorbed by the aquatic plants.
- The elegant and robust ceramic disc is microporous and is permanently bonded to an acrylic bubble counter to hold under high pressure and produce a superfine Co2 mist. The ceramic disc is made of high-quality, transparent acrylic and does not break easily when maintaining the aquarium.
- The included Co2 diffuser with suction cup can be safely placed in the corner of the planted aquarium by the user.
- Only 20 PSI (1,37 bar) required, the CO2 diffuser works with all CO2 systems, even DIY levels. Recommended pressure higher than 25 PSI.
- 3 models for different pool sizes. S for 1-2 bps (bubbles per second), for 13gal or less. M for 2-3 bps (bubbles per second), for 13-32gal. L for >3 bps (bubbles per second), for 32 gallons or more
14,99 EUR
View product Bestseller no. 10 
JBL PROFLORA CO2 TAIFUN SAFESTOP, water return protection for CO2 systems, for 4/6 mm hose diameter
- Safety device with non-return valve to prevent water from flowing back from the aquarium into the CO2 technology
- Easy to install by cutting the CO2 hose and then inserting the non-return valve (arrow pointing towards the aquarium)
- Locking nuts prevent the CO2 hose from slipping off for increased safety
- Suitable for CO2 systems with hoses with a diameter of 4/6 mm
- Scope of delivery: 1x JBL water return protection for CO2 systems, JBL PROFLORA CO2 TAIFUN SAFESTOP, including hose locks, item 6468100
5,99 EUR
View productThis is what Stiftung Warentest says about products in the “CO2 In Aquarium” area
Stiftung Warentest examines, compares and tests the best products for consumers. Many of the tests by Stiftung Warentest help in deciding which product to buy. We do not currently know whether there is a test winner from Stiftung Warentest for this product that is recommended for purchase.
Our comparison winner in the field of “CO2 In Aquarium”
Compare winner
MICROBE-LIFT Bio-CO2-118 ml - Innovative liquid CO2 fertilizer. Promotes plant growth in freshwater aquariums with microbes & humic acid, free of nitrates.
- BIO-CO2: A specially developed microbial source of carbon from beneficial bacteria and humic acid for simple and effective CO2 fertilization of aquarium plants in any freshwater aquarium. It is ideal for combining with the MICROBE-LIFT fertilizer series.
- HOW IT WORKS: The useful bacteria contained produce CO2 available for plants from the humic acid also contained in a biological process.
- GROWTH & COLORS: Bio-CO2 promotes healthy plant growth and intensifies the colors by optimizing the nutrient uptake in plants.
- APPLICATION: Starting dosage: Add 10 ml BIO-CO2 to 100 liters of water on the first day. Subsequent dosage: Add 1 ml to 2 liters of water every 2-100 days. Note: The dosage depends on the number of plants, density and size and can be slowly increased depending on plant growth.
- MICROBE-LIFT- Is one of the world's leading brands in the care and supply of seawater and freshwater aquariums and ponds. The products are among the most popular and effective on the market. All products are subject to very strict control and quality management to ensure consistently high quality.
6,90 EUR
View productCurrent offers in the area "CO2 In Aquarium"
You want the best products in the range "CO2 In Aquarium" buy? In this bestseller list you will find new offers every day. Here you will find a large selection of current products in the "CO2 In Aquarium" category.
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