- Orb style glass CO2 drop checker for nature aquarium
- Use to easily monitor your planted aquarium CO2 levels
- includes one (1) suction cup
*We recommend to purchase GLA 4dKH analytical standard and a pH indicator reagent (sold separately) to create proper CO2 Indicator fluid to use in drop checker.
Using this in conjunction with GLA 4DKH and its been super reliable. Zero complaints.
I was ordering more 4dkh when I saw GLA had this gem. Super cost effective guys! This I like a lot due to its price and simplicity to use. Everybody knows how difficult it is to fill a drop checker. Not with this guy!
Very happy. I use this with GLA 4DKH and my API ph test reagent to mix and its been the best performing drop checker for me. Both in color and speed. I do think GLA 4DKH is the very best because I have used many others but this is super high quality and very accurate.
I ordered two of these and both really nice. I wasn't expecting much because of the price but boy are they nice and big. You will need 4DKH and ph reagent to create a solution. I use my API ph test kit works great.