Discussion in 'Biological/Natural Filtration and Deep Sand Beds' started by dallasg, 24 Nov 2014.
an interesting read
DSB Heresy - Reef Central Online Community
somebody else had similar type of setup last year. But he did not drain away the water. Used an airline hose connected to the plenium hanging over into return chamber, to constantly drip water from under the DSB. Thereby "pulling" in water with the loaded crap deeper into the sand, helping the bad stuff to get to the anaerobic bacteria that is deeper down.
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