Hello,

I have client who has a challenger pump that always has a bubble of air in the pump pot. The pool does not lose any water nor is there any water in the pump area or around the pool. There was a leak on the return to the spa, but it was fixed. The pool has one drain, two skimmers, and a spa drain. I can turn off the skimmers and the bubble somewhat goes away. I can turn off the drain and its worse. Any ideas on how to track down a above ground air leak? Maybe its underground. Not sure. But I am 100% positive the pool doesn't lose water. Sometimes I have to drain water out of the pool because its a cart filter.