I think I may put a cuttlebone in the tank to help with the hardness and calcium. Does anyone know how much to put in if I have no filter and how often to put a piece of cuttlebone in. The tank has no filter, is about 1.5 gallons not filled up all the way, I change about 50% of the water every other day, and if it contains a snail and an african dwarf frog. Is a cuttlebone a good choice for increasing the calcium and hardness? Will it shock or harm a snail or adf?

kara, once again DO NOT post multiple threads with the same topic!