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I have 4-39watt T5's over a 30 long. I have 3 different caps, all are still alive after 4 months but show very little growth. What growth they do show is down at the edges and they are getting thicker (3/8 of an inch thick.) . The tan with purple edge shows more pe than any I have ever seen. Day or night it has so much pe it looks like some type of lps. Any idea why?
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