The CalAquaLabs Double Check CO2 Checker for Aquariums is the only all-glass dual-compartment CO2 checker that allows you to compare the CO2 level in your aquarium to a standard reference. The CO2 indicator solution is kept in the top chamber, while the CO2 reference solution is kept in the bottom chamber. The color of the reference solution corresponds to 30 ppm of CO2, a level widely accepted for good plant growth in most aquariums.
It's a one-of-a-kind dual-compartment design. The Reference solution is kept in the inner compartment, while the Indicator solution is kept in the outer compartment. There is no need to prepare a solution. The necessary solutions are pre-made and included. Improved durability and usability. Both chambers are simple to fill and empty. Easy to use, easy to read, and more accurate than other single-compartment checkers.
Each set includes; 1 Double Check CO2 checker, 1 x 15ml Reference solution calibrated to 30ppm CO2, 1 x 15ml Indicator solution, 1 suction cup, 2 Reference chamber plugs, and use instructions.
Size: 5cm (W) x 3.8cm (H)
