My expierience with it was positive. I have a 48" with 8 Giesemann bulbs over a 72 gallon bow. Two miday, three atinic pluses and three atinics. Been running it for about 4 months. When I first hooked it up I had some Sps that lightened up and rtned and others that went pastel colours. My polyps shortened and lps seem quit happy. I have had positive growth on the sps that is left. I would compare it to my other sps dominated tank as the same. One cap I have that was about 2 inches by 1 inch has doubled in size in that time. I started noticing growth after about a month and a half.
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