cherubfish pair
New member
Alk 6.0 or 2.24
You don't have units here. If I remember right, Alkalinity (or carbonate hardness) is measured in either dKH (German for degrees of Karbonate Hardness) or meq/L (milliequivalents per liter). The carbonate ion is CO3 which interchanges with CO2 in water. You might have seen it written as a part of the mineral calcium carbonate (CaCO3) which is part of a lot of what makes up sea creatures. Their shells and the like.
You might want to go with a 2 part additive which is mostly calcium in one bottle and mostly bicarbonate in the other. This will help you control calcium, Alkalinity, pH and other things. The reason there is two bottles is because if in the same bottle, the two parts would combine into one molecule at such concentrations. Pouring the individuals in the tank keeps them separated with a volume of water (while in the tank). This way the separate halves can then be absorbed by corals and the like.
HTH