10 Best co2 dauertest in Deutschland

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Last Updated - 28/04/2025

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01

noble aqua

noble aqua CO2 Continuous Test Aquarium 150 ml CO2 Indicator Liquid 20 mg/l CO2 Test Meter

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9.9

Exceptional

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Main highlights

The CO2 test aquarium is suitable for all bio and compressed gas CO2 systems.
Strong hold: the included suction cup holds the continuous test securely on the disc
Elegantly designed and perfectly shaped, the long-term test is an eye-catcher in your aquarium
Easy measurement of CO2 content thanks to colour display for optimal plant growth and animal welfare
150 ml test liquid, colour change at 20 mg/l for accurate reading of CO2 content (2 x 75 ml)

22,90 €
Value for Money

02

Epicing

noble aqua CO2 Continuous Test Aquarium 150 ml CO2 Indicator Liquid 20 mg/l CO2 Test Meter

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The CO2 test aquarium is suitable for all organic and compressed gas CO2 systems
Strong hold - the included suction cup holds the continuous test securely on the window
Elegantly designed and perfectly shaped, the long-term test will be an eye-catcher in your aquarium
Easy to measure the CO2 content thanks to colour display for optimal plant growth and animal welfare
150 ml test liquid - colour change at 20 mg/l - for accurate reading of the CO2 content (2 x 75 ml)

22,90 €
03

ARKA

ARKA mySCAPE-CO2 Checker - Includes 15 ml Indicator Solution - CO2 Continuous Test with Colour Display for Precise Monitoring in Freshwater Aquariums, Essential for Aquascaping

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Universal: ideal for use with many standard CO2 supply systems, such as the ARKA mySCAPE-CO2 system.
Easy to place: the CO2 test glass container can be easily attached to the aquarium disc by means of a suction cup from the inside.
Colour display: the control fluid, which is filled into the glass container acting as an aquarium CO2 test, has a colour change, which shows the status of the CO2 supply in the aquarium at any time and can therefore be used as a reliable aquarium CO2 continuous test.
ARKA mySCAPE CO2 CHECKER SET: A CO2 tester made of glass and 15 ml CO2 indicator liquid, ideal for permanent and easy monitoring of the CO2 supply in any freshwater aquarium.
ARKA Biotechnology GmbH - deals with the development, production and worldwide distribution of innovative products from aquariums, DIY supplies, to accessories for dogs, cats and rodents.

14,90 €
04

JBL

JBL ProAquaTest CO2-pH Permanent ProScan Recharge with 24 Water Analysis Strips.

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9.4

Excellent

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Main highlights

For direct use thanks to the complete set with display container with suction cup, reagents and colour scale stickers, refill reagent available separately for refilling
Displays pH value from 6.4 to 7.8 and CO2 content
Continuous test for fertiliser control: place reagent in permanent test device and attach to the disc in the aquarium with teats, compare the reagent colour with colour scale sticker and read the value
Box contents: 1x JBL water test set, ProAquaTest CO2-pH permanent, includes 1 display container with suction cup, 2 reagents and colour scale sticker
Advanced water test series: simple and safe control of the water values of freshwater aquariums, ideal for permanent direct measurement of the optimal pH value and carbon dioxide content

15,89 €
05

Measury

Measury CO2 Continuous “Orb” Test for Aquariums - Made in Germany - 30 ml Test Fluid 20 mg/l - CO2 Test Drop Checker - CO2 Tester

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9.3

Excellent

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Main highlights

Test liquid made in Germany: As the CO2 content in aquariums is crucial to the health of its inhabitants, we have not compromised at all. Our 30 ml CO2 test liquid is produced in Germany in an ISO-certified production facility
Super-strong suction cup: the test orb holds firmly on the glass thanks to its extra-strong suction cup
High-quality borosilicate glass: clear, perfectly shaped borosilicate glass, as used in laboratory equipment, makes the test orb a real eye-catcher
CO2 measurement in aquariums: Determine the CO2 level in your aquarium by observing a change of colour in the test fluid, which is filled in the continuous test. If the CO2 content in the aquarium is 20 mg/l, the solution turns green
Box contents: 1 x CO2 continuous test glassware, 1 x 30 ml indicator liquid 20 mg/l, 1 x suction cup and 1 x instructions in German (English language not guaranteed).

19,95 €
06

Begpoee

Begpoee Pack of 2 CO2 Glass Aquarium Monitor, CO2 Tester Aquarium, Aquarium CO2 Monitor, CO2 Glass Tester, CO2 Test Aquarium Drop Checker, CO2 Tester, for Freshwater Aquariums Planted Fish Tank

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9.1

Excellent

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Main highlights

Product contents: 2 x round aquarium carbon dioxide instrument and 2 x suction cups (this product does not contain a CO2 indicator). This set is a must have for the aquarium. It features a beautiful and practical design that allows users to easily monitor and manage the water quality of the aquarium, providing a practical and reliable tool for maintaining the ecological environment of fish.
High-quality material: This round CO2 instrument for aquariums is made of high-quality glass material, which is durable and corrosion resistant. It resists chemicals and moisture in the water, ensuring a long service life. The round CO2 instrument has high transparency and users can visually observe the colour change of the CO2 indicator inside the detector.
Easy to use: simply pour the CO2 indicator into the round CO2 instrument, then install the suction cup and then stick the instrument to the inner wall of the aquarium via the suction cup. The colour of the CO2 indicator is blue. At low CO2 concentration, the colour appears green. If the colour gradually changes to yellow, it means that the CO2 concentration gradually increases.
Application: This CO2 round instrument is suitable for different types of aquariums. Whether it is a freshwater aquarium, a saltwater aquarium or a plant breeding aquarium, it can help people maintain the balance of CO2 content in the aquarium and determine whether the water quality is suitable health and reproduction of living beings.
Adsorption design: This round CO2 instrument has been specially developed for aquariums. It is equipped with a strong suction cup that can be firmly adsorbed to the inner wall of the aquarium without taking up the space of the aquarium or affecting the activities of the fish. The adsorption design makes the installation process easy and fast without the need to use tools or perform complicated operations.

7,99 €
07

Aqua Rebell

Aqua Rebell – CO2 Check – 20 mg per Litre

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Perfect for optimal CO2 content in an aquascape
Easy to read due to colour change at different pH values

18,85 €
08

CONNECTION

CONNECTION Pack of 3 CO2 Continuous Test Aquarium with 2 Suction Cups CO2 Test Aquarium Drop Checker Hanging, Note and Round CO2 Glass Tester Aquarium CO2 Monitor CO2 Tester for Freshwater Aquarium

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8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide application: our CO2 glass aquarium monitor helps you monitor the CO2 content in your water and keep fish and plants healthy. Suitable for different types of aquariums, such as freshwater aquarium, tropical fish tanks, plant breeding aquarium, etc.
Premium quality material: this CO2 test aquarium drop checker is made of high-quality glass, is non-toxic and tasteless, crystal clear, easy to observe and clean, safe and robust, can be used for a long time.
Package includes: you will receive 3 pieces CO2 permanent test aquarium and 2 suction cups, includes hanging CO2 glass tester (6.1 x 4.1 x 2 cm), note CO2 glass tester (5.2 x 4.1 x 2.6 cm) and round CO2 glass tester (5 x 3.4 cm). Sufficient for everyday use and replacement. (This product does not include CO2 indicator solution.)
Easy to install: first put CO2 indicator solution into the CO2 tester, add some aquarium water, then attach it to the inner wall of the aquarium with a suction cup. The hanging CO2 glass tester is simply hung on the edge of the aquarium.
Easy detection: The CO2 glass tester is installed 10 cm below the water surface. The CO2 indicator solution shows a low CO2 content in blue, shows an optimal CO2 content, yellow shows a CO2 surplus. Please change the liquid every three weeks to ensure accurate and reliable results.

9,99 €
09

Yangfei

Pack of 2 Aquarium CO2 Monitor, CO2 Test Drop Checker Aquarium CO2 Glass Tester Measurement Continuous Test

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

You have a "healthy" aquarium: proper CO2 is the key to maintaining the ecological balance of the aquarium. Too much CO2 harms your fish, too little CO2 affects plant production. The CO2 continuous test is used to record the CO2 content in the aquarium and allow you to have a healthy aquarium ecosystem.
Super Sucker The suction cup of the CO2 drop checker is made of high quality silicone, the suction cup has good suction power, can be firmly adsorbed to the aquarium, you can use it for a long time.
SUITABLE FOR BEGINNERS Whether you are a professional aquarium worker or a beginner in fish farming, you can use the aquarium CO2 endurance test simple, easy to use and easy to master.
High Quality Materials The aquarium CO2 measurement is made of high quality glass, non-toxic and tasteless, and completely environmentally friendly. Transparent color, easy to observe and clean.
EASY OPERATION Put 5 drops of CO2 indicator solution (not included) into the CO2 monitor and attach it to the inner wall of the aquarium. You can judge the level of CO2 by the colour change of the indicator.

9,99 €
10

CENPEK

CENPEK CO2 Drop Checker Glass Aquarium Monitor CO2 Indicator for Planted Fish

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

You need to be very careful with the health of your plants and carbon dioxide is one of their main requirements.
This CO2 monitor is one of the most important items of your aquarium kit that helps you to constantly control the CO2 content in the water.
The monitor should be installed about 10 cm below the water surface. It is recommended not to install too far from the refiner.
Suitable for aquariums, aquariums, especially aquatic plants, tropical fish to observe and cultivate aquariums.
CO2 drop tester made of high quality glass, for measuring CO2 content at a glance (without indicator solution).

8,99 €