Remember to never block the output of a skimmer

. A long time ago I was cleaning my skimmer (berlin xl at the time) and i was using a sponge (like the ones for washing dishes with a coarser side) to clean the inside of the return line and the phone rang. So i forgot the sponge in there. Plugged everything back up and left the room while the skimmer filled up (the XL were BIG

). When i came back the collection cup had overflowed about 10 gallons on the floor. Thats a mag 12 at 0" head plugged on the skimmer for ya

.
Marc.
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20Gal, 45 lbs LR, 65W PC 10 000K + 65W PC 20 000K + 10Gal sump/fuge
Livestock :hermit and snails, Green star polyps, Button polyps, Finger leather, Xenia, Zoanthids, Mushrooms, Yellow polyps, montipora digitata, acropora, ?mistery polyps?, mistery crab, six line wrasse