Aquarium CO2 Drop Checker Solution 15ml

Aquarium CO2 Drop Checker Solution 15ml.  It consists of a pre-made 4dKH solution containing the appropriate amount of reagent. No mixing nor preparation is needed for its easy use. Simply open the bottle and fill the CO2 drop checker. Fill the drop checker 2/3 full of CO2 Drop Checker Solution (about 25/30drops) Now invert it, being careful not to spill the fluid  Next, holding it level, mount the checker anywhere on the front glass inside the tank so that air is trapped in the vessel When the reagent solution is deep green, the optimum amount of CO2 is diluted in the water column Replace CO2 Drop Checker Solution minimum once a month to maintain an accurate read. When the drop checker is submerged in the aquarium, the carbon dioxide in the water will fill the airspace of the drop checker and will eventually be absorbed into the indicator solution. The carbon dioxide will seek a point of equilibrium between the indicator solution and the aquarium water. As equilibrium is achieved, t