Dosage: 10 ml of KH Plus solution raises carbonate hardness by 0.5 dKH in 100 l (27 US gal) of water. Carbonate hardness in a 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 (The recommended level of magnesium in aquarium water is 1180 – 1460 mg/l (ppm) before attempting to raise or adjust your calcium and alkalinity levels.