So I'm new to this and put some zoas in my tank. I have had both now for 2 months but it just seems like they lost their color. I have moved them up and down on my tank and now they are on the sand bed. I feed them BRS reef chili. I had an emerald crab who almost demolishes both colonies but he has been removed and they seem to be doing a lot better. My Alk is low at 3.6 and my nitrates are 50. I'm working to get those better. I'm wondering if that my only problem.
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