lowering calcium


Is there a way to lower calcium that is safe I checked mine and it is at 580 way to high. I took a sample to my lfs for a second opinion and they came up with the same thing. I mostly use instant ocean salt but I started using oceanic natural sea salt mix about a month ago and it's been going up. I don't dose calcium so it most be the salt mix.Also is it dangerous for the coral for the calcium to be that high?


New member
Switch to a different salt that is lower in calcium. How are you measuring the salinity of your tank? What is your alkalinity?


Premium Member
Oceanic has tended to be extremely high in calcium. There isn't much information on the effects of high calcium. You could try measuring some freshly-mixed Oceanic.


I use a refractometer to check my sal tright now. I'm out of my alk. test kit I keep forgeting to grab one.