I did several frags yesterday and about an h our later my skimmer had overflowed my one gallon milk jug and into the 5 gallon bucket I have it setting in. Never hurts to be safe with a double back-up on the overflow. How long should I leave the skimmer off? Hell I don't have any fish in there anyway, maybe I should stopp skimming completely andjust skim once a week. Comments-suggestions glady accepted.