02-04-2011, 04:31 AM
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Member
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Join Date: Oct 2009
Location: 15 min NE of Red Deer
Posts: 5,470
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Definitely less rock & less sand for a 90 gal, I have half that amount of sand and a little less rock in the 8' er. I would put some egg crate over the top as well to keep the jumpers in.
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