So I noticed today when I did my weekly testing that my calcium level has dropped from 460 to 400 in one week since I did a 30% water change. I have several LPS and they are growing. So I attribute the drop to that. My question is what is everyones preferred method of maintaining calcium levels? water change? reactor? supplements? I want my coral growth to keep up at their max rate. OR am worrying for no reason?



