How to clean sand?

you could place a power head in the lower half of you tank on the same side as your return line.

i think the best you can do as far as livestock is the previously suggested cory cats. they're entertaining anyhow.

i've always wanted to try a freshwater clam in a sand tank to see if it stirs up the bottom or does anything of benifit. i kept an inch long clam in a small tank for about a year, and it spent all of its time burried verticaly in the gravel. i'd think it would stir the bottom of a sand tank for sure.
 
NJ Devils Fan, there are all kinds of microscopic life in an aquarium. It may be possible your corys are picking at stuff on it, but they are not eating the poop.
 
I guess that when I was watching them the other day, the guy I was following got the poop confused with food. He ate it and then moved on, so I assumed that they all ate it.
 
I have sand in my 29g with 3 cories and I don't notice any trash in the tank....then again, I'm still running a ac200 and a penguin 125 so that is probably where all the trash/poop is going....
 
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