Deep sand bed
FILTRATION METHOD USED IN SOME SALTWATER AQUARIUMS
Remote Deep Sand Bed; RDSB (aquarium)
A deep sand bed isHow Sand Beds REALLY work, by Ronald L Shimek, PhD, in Reefkeeping online magazine a filtration method used in some saltwater aquariums and some freshwater aquariums. A deep sand bed, similar to the Berlin Method, is designed to cultivate anaerobic bacteria in the bottom layers of sand, converting nitrate to nitrogen gas to remove toxic nitrates.