Stephane, I have to disagree with that. Calcium can be depleted at different rates that alk. If someone regularly adds anything, they need to regularly test for that substance.
Mason, test your alk and Ca and then we can determine what, if anything, you need to add. If your levels are way off, kalk will only keep them way off; remember, kalk maintains levels, it doesn't change them. There is a formula to match alkalinity consumption to strength of kalk, I'll see if I can dig it up.
Do not blindly add things to your tank without knowing you need it and knowing how much you need. If your tank is new (how old is new?) and you only have small frags (of what?) you may not need anything more than a water change schedule and the small size bottles of your favorite 2 part mix.
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Brad
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