Hey guys this may seem dumb, but thought I share been doing this for months now, well as you know protien skimmers are basically fart machines I run mines constantly and well it smells so bad that my wife was constantly telling me the living room smells like crap. Well one day I was doing laundry and I thought hey ill just put one of those scented dryer sheets on top of the skimmer and sure enough it worked! Not 100% but wifey hasn't said anything about it since. Just thought I share this super cheap trick i use.