I have been running this tank for a time now with just a sponge on the return sump pump for particulate removale and chaeto as the main nutrient reducer. There is no protien skimmer, UV, denitrator, chemical, etc., filteration.
Water is skimmed from the surface, sent to the fuge and pumped back at a rate of approx. 200gph.
The main display keeps algae free. On the down side there is little food for the 1 astrea snail that resides in the 20cube. The ricordias are being target fed to make up for the nutrient-stripped water.
This was my initial goal when tank was started Aug 06; a natural, simple set-up. Works, maybe too well.
