Thank you...I originally had all this rock in my 55 gal reef tank a few years ago, but my ex wife bleached my tank during a rage, killing everything instantly. I re-treated the dead rock and just packed it all into my smaller tank. I'm still using majority of my equipment in there too(4 powerheads, protein skimmer rated for 90 gal, 300 watt heater). So it's a small tank, with a big tank heart. :)