When I upgraded from the 10g to the 25g before Christmas 2011, it was on my mind to put a thin layer (under 1") of sandbed at a later date. However, with all the detritus I'm pulling out weekly (with no fish to feed and no coral feeding), I've decided to keep the 25g BB. With the BB, I can see that a lot of detritus accumulates under the rock. Turkey basting gets that crud out from under there where it can be either siphoned out or blasted into the water column for the foams in my HOB to catch and to later be cleaned.
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