ZRDR Glass Drop Checker Kit with 15ml Co2 Checker Solution - The Ultimate Solution for Precise Monitoring of Plant Aquarium Co2 Levels Review

More Convenient - The mixed carbon dioxide drop checker solution does not need to consider the ratio of water to solution, just use it directly, convenient and fast. How To Read co2 Drop Checker - When your co2 is off the drop checker solution will be a deep blue color. After co2 has been on for around 30 minutes you should notice the color change. The optimal co2 concentration will be at 30ppm which will be a green-light green color. If it remains blue your co2 is too low. If the color turns yellow then your levels are too high and may harm your fish. Package Including - Glass drop checker with pre-mixed indicator solution, suction cup. Stable and Durable - Made of high quality glass, durable and ensure test result stable, with suction cup design, simply attach it on the wall of your fish tank. Exquisite Packaging and Quality Service - Our aquarium water test kit comes with exquisite shockproof packaging to prevent breakage. If you have any questions about our Co2 Checker, please contact our customer service, we will reply in time and propose a solution that satisfies you.