clown:
I just set up a fug with a plexiglas box to hold some filtering material. Used a 15g $5.00 plastic container from the dollar store and about $5.00 worth of plexiglass. It is powered by a powerhead and used a HOB overflow. It is for my 55g and just fits in sidways in the stand. Can take some pics if you want.
I think if you study what is on this board, think things out then you can come up with your own solution for a very reasonable price. One big word of caution is to test out the system. See what happens when the power goes out. In my case I forgot there was a syphon back through the powerhead, and adjusted the output to break syphon before flooding the 15g container. Also make sure that when the power comes back the overflow still works. Also the "u" tube over the back seems to "build up" air at the top, so I keep an eye on that to insure the syphon is still effective.
If you want pics i can take them and email them to ya. contact
beaslbob@aol.com