I don’t think I seen this question.Ok so I have a mixed reef. Everytime I put sps in my tank within a week they go downhill. Par is 200-350 on these parts. I can put anywhere and it'll be the same outcome. I have my flow and everything else good. Lps doing great and all. I think it's something hidden so I'm going to do ICP test. My last test for my last tank I did see I had low to none iodine and I had the same issue in my last tank even with all parameters and flow being good. Will this be an issue for sps. They start to lose flesh and don't do well within days like I said this is only a sps issue nothing else. This goes from the hardier Montis to everything else even birds nest.
How mature is the tank?