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Thread: Evaporation when cover first installed in Fall?

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    Join Date
    May 2012
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    Default Evaporation when cover first installed in Fall?

    I'm curious if others have experienced water loss (evaporation?) when a cover is installed and it's still relatively warm out?
    I'm in SC so pretty hot summers and mild fall weather. Last year I installed our cover in late September to avoid lots of leaves. Our cover is mesh - so rain will pass through. I noticed soon after covering (maybe 3-4 weeks) that the water was way down - probably a foot. I assumed I had a leak and would deal with it in the spring. When we re-opened and refilled I was surprised that it seemed to hold water ok. The drop in water level also leveled out over the winter - although hard to know how much precipitation played into it.
    Would covering the pool while it's still warm out force more evaporation that if I covered when it is cooler? It may have just been typical evaporation but it seemed to drop pretty quickly on that first month.
    Pool: 40K gal, 20' x 50', 8' deep - In-ground / Concrete w/ Zeron epoxy paint ● Pump: Hayward Super Pump (2HP) ● DE Filter: Nautilus FNS - 48 ft^2 ● Valve: Pentair SM-20-2; SWG: Pool Pilot with CC-15 cell

  2. #2
    CarlD's Avatar
    CarlD is offline SuperMod Emeritus Vortex Adjuster CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars CarlD 4 stars
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    Default Re: Evaporation when cover first installed in Fall?

    Ten bucks says you have a leak, fairly high up. Water dropped to the leak's level, then stopped.
    Carl

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