ltelus said:What was it before you started dosing.Kalk won't raise your calcium much if anything.I am unfamiliar with the Kent product and don't know how concentrated it is.Is it calcium chloride based?
Scuba_Dave said:Kalk can raise CA to a certain degree, but very hard to keep it there. I have been able to get my CA up to ~390 w/kalk. But it drops fairly quickly.
You need to get your CA upto the level you want, & then maintain it w/Kalk & other additions: CA reactor, Randy's 2/3 partadditive, store bought etc
How big is your tank? How long has it been up & running? CA load - corals, corraline on rock etc