Sera Test KH - Carbonate hardness - Drop test

For easy determination of carbonate hardness in fresh water and sea water

For about 390° dKH (x 1.78 = TAC French value).

If the carbonate hardness is too low, we recommend sera KH/pH-plus (in soft water) or sera pond bio balance (in ponds) and, if it is too high, filtration through sera super peat (in freshwater aquariums).