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🌿 Keep your tank thriving — never miss the perfect CO2 balance!
The CO2 Drop Checker Test Kit features premium thick glass and a secure suction cup for easy installation in any aquarium. Measuring just 4.5cm tall, it provides a clear, color-coded indicator of CO2 levels—blue for low, green for optimal, and yellow for excess—helping you maintain a healthy environment for aquatic plants and fish. Note: CO2 indicator solution is sold separately.
| ASIN | B085Y6416J |
| ASIN | B085Y6416J |
| Best Sellers Rank | #204,593 in Pet Supplies ( See Top 100 in Pet Supplies ) #317 in Aquarium Test Kits |
| Brand Name | Dannisly |
| Customer Reviews | 4.3 4.3 out of 5 stars (47) |
| Date First Available | March 16, 2020 |
| Date First Available | March 16, 2020 |
| Directions | 1. Make sure your test kit is clean. 2. Drop 5 drops of CO2 indicator into the glass drop checker and make sure it is stored in the bulbous side of the valve with the opening facing down. 3. Place suction cup (included) on the drop and attach the co2 drop checker to the side of your tank, completely submerge it in the tank water. 4. Wait 2 hours to read Co2 levels. (NOTE: The CO2 indicating soluti… |
| Item Package Dimensions L x W x H | 4.33 x 1.69 x 1.5 inches |
| Item Weight | 0.02 Kilograms |
| Item model number | US-B-0033 |
| Item model number | US-B-0033 |
| Manufacturer | Cobella |
| Manufacturer | Cobella |
| Material | glass |
| Package Dimensions | 4.33 x 1.69 x 1.5 inches; 0.71 ounces |
| Size | X-Small |
| Target Audience Keyword | fish |
V**V
Great quality
Just what I needed to replace the drop checker I accidentally lost. The quality is decent, I’m unable to judge the quality of the suction cup since I accidentally cut it in half while opening the package, but it FEELS very high quality and strong. It looks great in my planted 10 gallon, it’s easy to assemble, it doesn’t leak and it works as intended. A plus is the indicator liquid itself is easily added to this unlike some other brands.
E**.
Good item
Good material, good addition to checking co2 levels on water.
M**W
CO2 indicators review
Bought many CO2 indicators B4 this one work really well the others one I've had all ways leak out the dye
D**.
Good price, works.
Good price but takes forever to ship.
****
Showed up broken
Needs assembly: arrived in hundreds of tiny pieces. Shipped in flimsy envelope with inadequate padding. Great value if you want a really challenging puzzle with physical pain.. Not so great if wanting to measure Co² levels.
M**A
Cool meter
Cool CO2 meter
D**.
Pleasant shape
Easy to fill
A**R
Kind of accurate
You cannot get an accurate reading depending on the placement of the tester
Trustpilot
1 month ago
2 months ago