It seems that my water level is going down quicker than I am expecting and I have had to add water earlier this week to keep the water level up to past the point of the skimmer when it starts to suck air. I just got a new liner so do not expect there to be a leak in the tub, and my pump shows no signs of air getting into the basket area when the pump is off. My first suspicion is water evaporation. It has been a particularly hot week, and windy, and I know that they are two factors that effect water evaporation. So I decided to try the Bucket Test. Fill a bucket of water and keep it on the stairs of the pool and compare evap. rates. My question is, does the bucket test actually work? My research on water evaporation indicates that surface area also plays a factor. Can't help but notice the surface area of my bucket, about 1 sq ft, compared to my pool, about 800 sq ft. Will the bucket test work? Can any of you pool scientists out there offer an opinion. Thanks.