Our 34K gallon, IG vinyl pool loses about an inch of water per day. A bucket test showed little or no overnight loss compared to about 1/2" pool loss (with no pump running) The daytime loss is about the same. Have tried to check around the pool with food coloring, goggles etc. but have found nothing that would indicate a leak although with a large pool, it is possible we missed something. I am trying to let the pool continue to fall to see if it gets to a certain level but difficult this time of year with it being so hot. Right now I am circulating through main drains and the suction cleaner...no skimmers since they are about dry. I know that evaporation is an issue since our pool is exposed from daylight to dusk with very little wind protection. Still, I was wondering if you guys had any suggestions on what to check for next????? I have pretty good valve control but since I am losing with pump on and off, not sure that would help. Any suggestions would be greatly appreciated!!!! No obvious green grass patches in an otherwise dry yard. Thanks in advance!