I have a 24' above ground pool, same depth throughout pool. Over a 7-day period with temps in the low 80s and no use by my family my pool water level will still drop anywhere from 1.25" to 1.5" Is this normal? I keep telling my wife "I think we have a slow leak somewhere in the pool?" She thinks it's all in my head. We've gone over every square inch of that pool, both inside the pool and outside including the hoses and pumps, etc. and we find no wetness anywhere indicating a leak of any kind. Yet 1.25" to 1.5" of water loss per week seems like a lot to me. Any thoughts on this? Any general rules as to how much water I can expect to lose per week? Thanks!