http://www.duboisi.com/diy/BNfbf/bnfbf.htm
http://www.cichlid-forum.com/articles/diy_fbf.php
would these work. do they do the same thing as a store bought one and ne idea of the price differance because i will still have to buy a pump so it may end up being the same price.
also ne recomendations on the depth of my sand bed. i was thinking about one inch. how easy is this to clean and what type of clean up crew should i start lookin at getting
what do u mean by surface agitation