Thread: coral looks like its blistering - is it even possible
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Old 01/08/2008, 05:09 PM
Canarygirl Canarygirl is offline
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Join Date: Jan 2007
Location: Pacific Northwest
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Some people think--no personal experience with it, but I've read that in some cases this blistering is caused by low magnesium levels. They should be at 1200-1300 ppm so you could try testing that parameter with a good test kit.