"Rick" wrote in message
ups.com...
Why dont you run a canister filter? Ehiems have a good output
efficent enough for a 40 gal tank. I had one with my 55 gal used
it
along with the life rock


With the media removed, perhaps. Canister filters CAN work well, but
can create nitrate issues, as well. I, myself, would not use a
canister filter on a reef tank.

billy