randy. i have the ability to do 2part with a doser also. i just think kalk is easier. i thing ive noticed so far is i have not had to use any gfo since ive started kalk. phosphates seem to stay in check(under .03) . i hate to give that up.
the next tank i do is going to be a 300g aggresive fish only with a fake coral reef insert. LOL
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