My tank is a bit reckless (untamed). I've been considering removing the rock to make more space for some coral colonies that are getting larger than the rocks they are on. Sump is full of rock, so I don't think I need the rock for filtration.
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400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies
My Tank: http://www.canreef.com/vbulletin/showthread.php?t=28436
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