It's funny I had sort of the same thoughts while cleaning out my 40g w/DSB.
Why not use a plenum and "bagged filter sand" (easy to remove) in a sump. I liked his idea of running a Magnum under the plenum to remove the crap that falls thru.
I think I would still have about two inches of sand in the main tank for appearance and critters.
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bye for now, Kim.
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for every vision...
there is an equal and opposite revision.
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