Hi calcium

[frlejo]

The calcium in my tank will not go below 600. It has been 2 weeks since I put any calcium in there. Did a 10% water change, it went down a little, then right back up. Got my dh at 13 drops, & adding max amount of strontium & molybdenum.

[jegel]

I've read that Strontium slows the process of calcium being used. It's possible there is so much strotium that the calcium isn't able to be absorbed by corals and other calcium using creatures.