beachcomber

When I pre dissolve my calcium before adding it to the tank, it clouds out the whole tank for quite a while. The product instructions say to add slowly and directly to a high flow area of the tank. When I do this there is no clouding. I also realize thart calcium burns if it comes in contact with most types of flesh, but I'm wondering if there is some kind of secondary chemical reaction going on there that might be harmful to my livestock? I know this is a little out there for most of us.