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Old 04-02-2007, 06:49 PM
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marie marie is offline
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I've used IO for the last 15yrs and have never had any issues that would make me want to change. I do bump up the calcium a bit but I don't bother with Mg. For some reason magnesium has not been a big issue in my tank, I think I've only had to supplement once on my 175g because it dropped below 1250
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300g tank
http://www.canreef.com/vbulletin/showthread.php?t=86252
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