Colombo All4 System
Calcium and carbonates are the two most important elements in seawater, which are required in relatively high amounts and thus have to be added separately through Colombo Calcium+ and KH+. Colombo All-Four contains all other macro and micro-elements that corals need for an optimal growth and a perfect colour development, like magnesium, iron, iodine, potassium and many more. Based on the Calcium test, you add Colombo Calcium+. Add 50 ml Colombo All-Four for every 100 ml of Calcium+ you are adding to your tank.