How much room have you got? Some possibilties include a hang-on overflow (if you have a few inches), or an in-tank skimmer.
Les said:It looks like I found two that mite work. Red Sea Prizm, or Aqua C Remora. It would take two of them for 125 gal.
matter1331 said:what's so bad about the prizm skimmer? Mine does a great job, so does my dad's, which he has had for 6 years.
mogurnda said:Hmmm. Didn't know that RC, with tens of thousands of members, had formed a concensus on Prizms.
I agree that AquaC and CPR make much better HOB skimmers, but the Prizm seems to get dissed a lot by people who haven't actually used them.
I think Steven Pro's article in WWM mag sums it up nicely:
"Red Sea Prizms:
If you search the internet message boards about Prizm skimmers, you are likely to get an overwhelming negative response. I, on the other hand, do like these units for what they are. The basic Prizm is a cheap entry in the market for beginners, perfect for smaller aquaria. While the manufacturer states that these are good for up to 100 gallons, I am only comfortable using one on an aquarium up to 30 gallons. But, on a tank that size, the Prizm will be a decent performer. The Prizm Pro is a larger, more powerful unit, but it suffers from the same overrating issues as its smaller brethren. It is this kind of overrating that has so unnecessarily damaged its reputation among advanced aquarists. I have found the Prizm Pro to function completely adequately on tanks up to 55 gallons. This is in contrast to the manufacturer’s claim of operation in systems up to 300 gallons."