Calcium and alkalinity

[fishlover0815]

I'm really confused with calcium and alkilinity... I'm goi g to have a pair of clown fish in my nano aquarium, is calcium and alkilinity important if I don't have corals...? I'm going to add corals once my tank has reached 1 year, will it affect the fish if there is too little or too high?

 

[bang guy]

Yeah, unfortunately it's still important if you want to keep your Clownfish healthy. In small systems it's easy to maintain good levels just doing water changes. Another good thing with a fish only system is the Alkalinity and Calcium will be consumed much slower compared to a reef system.