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Thread: Underground Leak:

  1. Back To Top    #1

    Join Date
    Jun 2007
    Location
    NC
    Posts
    255

    Underground Leak:

    Well, I lost 3/4" of water in the pool yesterday and there was not a party

    Tonight I start the bucket test to determine if it's:
    a) the main drain (YUK!),
    b) the 2 returns under 8' of stamped concrete, or
    c) the sheer descent that's in the coping under 8' of stamped concrete

    My bet is that it's the main drain due to wet block joints in the retaining wall about 5' down from the top . I'll know after checking for 24 hours with the pump running in each scenario, then 24 hours with the pump off/pressure off.

    In the meantime I may have to look at getting the scuba tank hydro-stat'd and trying to squeeze into the wetsuit and doing thorough exams of the bottom then some dye testing...

    Any other ideas?
    Triad Region of NC
    18x37 Vinyl IG (24,000 gal.), BBB & GoldLine AquaLogic PS4 SWG, Hayward 1 HP Superpump / Hayward Sand Filter / Polaris 280 cleaner / 6 deck jets / Sheer Descent Waterfall (in coping) / Brick Red Concrete Coping / Stamped Concrete Deck
    Lots of oak trees, maple trees, *and* leaves!

  2. Back To Top    #2
    spishex's Avatar
    Join Date
    Oct 2008
    Location
    Hillsborough, NC
    Posts
    1,375

    Re: Underground Leak:

    You've ruled out leaks at the equipment and through your waste line?

  3. Back To Top    #3

    Join Date
    Jun 2007
    Location
    NC
    Posts
    255

    Re: Underground Leak:

    Quote Originally Posted by spishex
    You've ruled out leaks at the equipment and through your waste line?
    Unfortunately I haven't seen any water leaking from the waste line.

    Last night I had it set to pull from just the skimmer and return to just the waterfall. It'll decrease the TA some, but it will rule out 1 scenario. I can re-balance the pool when I'm not loosing water.
    Tonight I fill back up, set it so it pulls from the skimmer and returns through the 2 returns only.
    Then do the same thing with the main drain...1st thru waterfall, then returns, noting results in each scenario.

    Any way to "cover" or seal off the main drains at the liner/bottom of the pool so the hydraulic pressure of the water itself won't leak, if that's where the leak is?
    Triad Region of NC
    18x37 Vinyl IG (24,000 gal.), BBB & GoldLine AquaLogic PS4 SWG, Hayward 1 HP Superpump / Hayward Sand Filter / Polaris 280 cleaner / 6 deck jets / Sheer Descent Waterfall (in coping) / Brick Red Concrete Coping / Stamped Concrete Deck
    Lots of oak trees, maple trees, *and* leaves!

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