I would like to know on how to adding calcium into my tank. I buy a azoo calcium powder, and it say there 1 spoon of calcium mixed with 5 litter of water and have to finish in 5 to 6 days. I used dripping system into sump. About 1 litters a day and takes about 45mint to finish. My question: how much to add and this will be continue on everyday?. For your info my water quantity is 160g. (110g in tank and 50g in sump)