My skimmer has gone wild for the last time. It was a KNOP Hang on, went nuts every so often for no known reason and would flood my floor. Went to my LFS, not much to choose from... they recommended the Prism, I was skeptical but desperate. I cannot run much water through it or it will pump out the water and even with it nearly shut down it went nuts and overflowed on me. I also have a CPR... never has it gone nuts, but doesnt skim so well. I am looking for a good skimmer that wont ruin my floor. Any ideas? Your help would be appreciated. I dont want to keep buying skimmers and have to toss them in the closet because they dont work. It needs to be a hang on and pretty quiet. Hubby doesnt like noise. My tank is 100 gallons. Thanks so much.