i set my first overflow up last night, and everything was looking good when i went to bed, then when i got up this morning, there was a huge air bubble in the u bend, and probably 2-3 gallons of water on the floor..
I personally suspect my skimmer is what dumped the water on the floor, and that then somehow caused it to loose its sucktion but i dunno..
so whats this about putting a power head on it to keep the suction? I'm envisioning drilling and putting a nipple right at the top of the tube so that the powerhead can draw out any air that gets in there...
My question is that if for somereason the overflow pump were to stop but the powerhead weret o keep going, wouldnt it eventually suck air in from the outside box and thus break the suction that way?