A correct General Hardness(GH)is essential for clear water. GH is a measurement for the total amount of dissolved minerals in the water; these minerals mainly consist of Calcium. These minerals are essential for the wellbeing of your fish and plants. Colombo GH+ increases the concentration of salts and minerals in the water.These minerals and salts are necessary for healthy plants and fish.The GH value should be in the range of 3-12DH. You should not increase the hardness faster than 2DH per day.

Dosage : Add 1ml GH+ for every 5 litres of water to increase the GHby 2DH. The cap holds 10ml. Shake well before use.