Aquaforest. AF kH Plus, 150 ml.
10 ml of KH Plus solution raises carbonate hardness by 0.25 dKH in 100 l (27 US gal) of water. Carbonate hardness in reef aquarium should be about 6.5 -8.5 dKH. Do not raise dKH more than 0.5 dKH per 24 hours. Please ensure your magnesium level is within the recommended range before attempting to raise or adjust your calcium and alkalinity levels.
The product can be used only in the aquarium. Not suitable for human consumption. Keep out of the reach of children.