I'm new in the hobby and have just recently started adding corals to my tank. One that I bought came attached to a 4lb rock that was covered in coraline algae. I was talked into purchasing a bottle of "purple up" along with the rock, but after reading the instructions I've been iffy about using it, my tank is still young and I'd hate to get off to a bad start by throwing off my water chemistry. Anyone have experience with this product? Good/bad
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