Well, I'm gone for work for a few days and naturally my wife did not check the level of the pool water and let the water get below the skimmers. Last night the water level was fine, but coming home from work today she found the level below the skimmers and the pump running dry. I say running dry, but it may be something a little different. The main drain was obviously still under water, but with the skimmers above the water level the pump surges and goes through maybe 30sec to 1 min long cycles of the pump filling and operating correctly then backing off and pressure in the filter dropping for 30 seconds or so and the pump running "dry". I've seen this happen with the water level low in the skimmers and the intake in the skimmers not able to keep up with the pump, but never had the level below the pump. As soon as she told me what was happening I had her shut the pump off without waiting to see if the previously described surge was happening. After adding some water to the pool and turning the pump on for a test, it looks like the filter pressure is has gone from 18psi to 16psi. My question is, Have a screwed anything up? Is my pump ok? I've only been living in this house for a month and i'm still getting used to taking care of a pool. HELP!