Protein Skimmer anyone? in Equipment Posted April 23, 2015 I am currently running a CPR cy192 sump/protein skimmer on my 55 gallon tank (about 20 gallons worth of fuge and sump water also). I feel as though it is not pulling enough skim and that my tank might be suffering as a consequence but I am not sure. Does anyone have any experience with these all in one sump/fuges? I got the set up as a package when i bought the system so i do not know that much about it. If I do need to get a new skimmer does anyone have one they wouldn't mind parting with? I would prefer to get one used so its less of a blow to the budget.