I got these today from a friend. I've no idea if I should use these. I don't have a massive system just a 13g and a 7g system. They've never been used or opened before. I was wondering if anyone has used these products before and if I should use it to supplement my corals. I have LPS corals, I'm not that experienced in saltwater keeping but I'm willing to learn. I want to get some SPS but I'm not sure that I should get it for a system that small.
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