PurplePolyp
Aquarium Advice Freak
So I test my calcium the other day and its 620. I have been doubting my test kit so I take it to my LFS to test. They get 620. I do a 50% water change, wait two days and do another 25% change. Algae needed to be suctioned out anyway so kills two birds with one stone. I test calcium at LFS today. It's 660. They said this won't hurt my inhabitants. Most of my corals use calcium anyway. They said the worst it would do is hurt my equipment in the long run. What do you think?