Deep Sand Bed Questions

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Here is where a DSB gets convoluted, if the DSB is located in a refugium, much gentler water flow will preserve their productivity (Sprung 2005) and personal experience. One reason why this works is there is nothing to interfere with the current causing dead zones and the large pieces of waste have been broken up by the time it gets into the refugium. I use a MJ 1200 in a 55g DSB refugium. No rocks and only a few Caulerpa Prolifera.

Reef Crest currents are aimed at preventing dead zones, keeping the pores of the rock open, and removing the wastes from coral. Attempting to mimic the tremendous energy of the ocean.