My wife says I fret too much. I have only had water in my pool for a week now and I've already asked a couple of chemical questions. This one is a little different. When the pool was put in the back filling process broke lose a pipe. I was just standing around watching the process and innocently asked one of the installers why they had lowered the water in the pool. He looked at me and said they were not lowering any water. Immediately they dropped what they were doing and began frantically looking for the reason for the water loss. They applied several pressure tests and within an hour had found the culprit. They fixed the problem and things have held together (I guess). Now I'm nervous (remember new pool owner) and noticed today that the water level is down about 3/4 of an inch. It's been 91-92 and full sun the past few days. Should my pool lose 3/4 of an inch in 5 or 6 days? We used it minimally during the labor day weekend, but that's all. Does anyone think this is excessive or am I being a nervous nellie?