My skimmer is overflowing but now with bubbles or skim. All of a sudden the entire skimmer is filled with water. I unplugged it and still water remains all the way up to the top on the collection cup. Why did this happen? The sumo water is at a normal height. The whole skimmer is full of water. Its been running for a year. It runs at any water height just about. I have never seen it overflow with water. Water was just pouring out the top. Its the middle of the night and I can not look hard. I shut it off. Maybe something go into the pump?
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