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Thread: HELP! Chasing down leak. UPDATE: I FOUND THE LEAK(S)...now how do I fix it/them

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    HELP! Chasing down leak. UPDATE: I FOUND THE LEAK(S)...now how do I fix it/them

    At the outset, I would like to apologize for starting another thread about the same topic...I did not know how to update the title of the last one.

    After digging up the ground to get under the concrete to get to the skimmer (no leak found)
    Digging up the ground to replace a suspect return line (where the leak was not)
    After doing the dye test and not finding the leak...I was pretty ticked off

    I also build a pressure tester to try to find the leak and that did not work...but something else happened...as I put water pressure on the skimmer (after dropping the water down below the light to caulk it again) Water came OUT from between the light niche and the light itself...which I thought it odd...
    What would he skimmer line have to do with light niche....THIS IS SILL UNKNOWN.

    I plugged one return ...thinking if it was a return, it would suck he dye in...it did not. I then plugged both of them.

    I went back to the skimmer and dropped dye from the top...away from the hole...it took about 3.5 min for it to get to the bottom...but sure enough the dye tendrils started to get sucked into the hole....but there is no visual or physical dampness under the skimmer or connections.

    I plugged the skimmer up (thinking if water came OUT of the light fixture, it might be going back in.

    And sure enough
    dye1.jpg

    So...This seems to be happening at two locations...which might be part of the same suction line... I dont know...Any ideas on how to fix this.

    This is what I do know.
    The housing is probably either brass or copper...Im thinking brass.
    There is only one port hole...where the wire goes through...
    Any thoughts?
    Could the light also be plumbed to allow water to move behind the light.

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    Re: HELP! Chasing down leak. UPDATE: I FOUND THE LEAK(S)...now how do I fix it/them

    Are you saying dye in the skimmer comes out from the light ?
    22k gallon IG pebblefina, Jandy 1.5 HP VS, Jandy CV Cartridge filter, Fafco solar panels, Polaris 360 supply side cleaner, waterfall

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    Texas Splash's Avatar
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    Re: HELP! Chasing down leak. UPDATE: I FOUND THE LEAK(S)...now how do I fix it/them

    I found this video: Pool Leak - a how to fix. - YouTube. Maybe this will help you? Good luck.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
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    Re: HELP! Chasing down leak. UPDATE: I FOUND THE LEAK(S)...now how do I fix it/them

    Quote Originally Posted by gwegan View Post
    Are you saying dye in the skimmer comes out from the light ?
    No...the Dye is being sucked into the light...with the pump not running...same thing goes for the skimmer

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    Re: HELP! Chasing down leak. UPDATE: I FOUND THE LEAK(S)...now how do I fix it/them

    I don't see any way for the skimmer to leak into the light fixture, that's just weird. The only thing I can think of is that there is an equalizer line from the skimmer to the light niche (usually a equalizer, if present, is plumbed from the skimmer directly to the pool wall below the skimmer). Try taking out the light and looking behind it and using the dye test with the light out and see what you see. A picture of behind the light may be helpful if you can take one.

    If there is an equalizer line (again, not expected, just the only guess I could come up with) you can block it on both ends or pressure test it and see if the leak is there.

    -- Update --

    I misread the above and thought the dye was going from the skimmer to the light - I still suggest pulling the light and seeing what the dye does specifically in the niche.
    - Matrioux

    2007 18K pebble IG pool - Wincor Pool Systems automation & SWG (under development) - DE Jandy DEL60 Filter - Jandy 1HP Pump - TF-100 Test Kit

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    Re: HELP! Chasing down leak. UPDATE: I FOUND THE LEAK(S)...now how do I fix it/them

    Well...the moment I feared. I went and spoke to the original poll builder...of some 40 years ago.

    Turns out that the Light fixture is in no way shape or form connected to the skimmer line. There were two separate issues. The leak from the light fixture and the leak in the skimmer line. It turns out that the pipes either went below the light or above...he could not remember. The issue is...the light is right under a concrete slab which is where the diving board is...which means that I will have to tunnel dig from the grass area under the concrete slab area....which I am not looking forward to

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    Re: HELP! Chasing down leak. UPDATE: I FOUND THE LEAK(S)...now how do I fix it/them

    I had a leak in my light niche and used some two part epoxy on the leak and it has held for two summers. I knew I was going to have to drain and re-gelcoat the FB in a couple of three years and would do a more permanent fix then.
    5900 G Fiberglass IG pool (circa 1990), SWG Hayward Aqua Rite GoldLine (2013), IntelliFlo Variable Speed Pump (2013), Hayward Pro Sand Filter (circa 1990), Well water (no iron or other metals fortunately), test with Taylor K2006C, Charleston, SC

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