After it rains there is a streak of dirt that stains the side of the pool under the light in the deep end. I have a leak but for the life of me cannot figure out where it is coming from. The bucket test shows that I am loosing about 1/4" of water per day from evaporation. With various things turned on and off it is a litle more than that. About another quarter inch or so. I think I am losing about 1/2" per day including evaporation when everything is running. I have run the pump with no skimmers. I have run the pump with one skimmer closed. I have run the pump with the cleaner pump off. I have two fountain nozzles on the side of the wall that I have turned on an off with no loss. So back to the dirt stain around the light. Could this be a source of the leak? How could water be leaving the pool when the conduit runs up higher than the water line?