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Unread 01/17/2012, 06:45 PM   #9
bamf25
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Join Date: Dec 2010
Location: Central NJ
Posts: 1,419
The biggest issue with IO is the ca level is listed at 400, Most people like more calcium than that (the 420 to 450 range) for reef tanks. If you suppliment calcium it should be just fine, but you will find it very hard maintain calcium with just water changes.


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