You need to make a skimmer box for your cannister filter.. Thats why I never just drill a tank and put a simple bulkhead for the drain to sump like so many LFS and even hobbyist do there is no surface skimming and thats where all the oils and oily waste go to..Household grease and oils also that acculimate from cleaning and cooking. and smoking . _________ Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible (Doug Larson) |