SWC 120 protein skimmer advice

[Enigma]

I was running my SWC 120 on a twenty five gallon system for a couple of months, and it seemed to work just fine. Everything did well: even my Kenya tree and other softies. I don't know how they would have done long term.

I use it in my 55 gallon system right now, and I really like it. These skimmers do seem overly sensitive to water level changes, so an ato of some sort will certainly help in keeping it functioning well. I just got my ato worked out earlier this week, and the change in the skimmer's performance is noteworthy.