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    Leak deep underground, your basic pool nightmare

    Barry, That's a good point, for other people with leaks. But I think not important for me. I suppose it is possible for the gunnite layer to be compromised by a leak but I have cobble and sand ancient river bed under my property. It drains well and is stable. Last year, when I put a camera...
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    Leak deep underground, your basic pool nightmare

    Well, the leak stablized. I still can't be sure it isn't the HRV as I did shock and brush the other day and could have reseated the HRV if that was the problem. At this point, I think the lower shell and the main drain and its lateral are innocent. HRV can be dynamic so it might have...
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    Temporary piping for leaking pool

    Thanks guys. I forgot my skimmer bucket has a threaded port. I trying a threaded piece of capped pvc in the skimmer. As soon as my new pump unions get here (whacked some plumbing to try to camera the suction line so I might as well improve the pump setup), I'll set it up and try it out.
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    Temporary piping for leaking pool

    Skimmer drops 10' into the ground to tee into the main drain. (those *******). That 1.5" suction pipe (****) goes directly to the pump (Drain+Skimmer)->Pump->MPV->Filter->Heater takeoff->[3 returns] + [waterfall] + [slide] Returns do have shut-off valves that I added, grouped per the brackets.
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    Temporary piping for leaking pool

    Yeah, I've slammed it twice already. I was losing 4" a day so that went pretty quick but I'm more in the 1" per day amount now (whereas calculated evap is ~1/3"). At this rate, if it runs to empty, I'll need a month. I guess I'm expecting to stop leaking in 7-10 days for no particular reason...
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    Need a 3 day temporary fix please

    What did you do? Cutting and gluing pvc is really easy and I'd suggest adding it to your DIY toolkit. Just fix it yourself! To work on pvc, you don't need many tools: - two part pvc glue (purple primer and clear glue) - a cutting tool for 2" pipe (note: the tools needs to cut to 2-5/8" or so)...
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    Temporary piping for leaking pool

    All right, guys. Yet again, my pool has sprung a leak. I'm busy seeing where it settles (level wise) and then will begin what might be a challenging repair. I have another thread for the leak. This thread is about how I might be able to use my filter and pump while my skimmer and my return...
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    Muriatic Acid dumped near tree

    I'm curious how this turned out OP. Any chance of an update?
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    Leak deep underground, your basic pool nightmare

    Bperry, Thanks for discussing this problem with me. I'm definitely pulling my hair out a bit. I can't run my equipment once the skimmer is dry so I haven't run the equipment in at least 10 days. The water went way below the skimmer fast and hard, much like my hrv failure last year caused...
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    Leak deep underground, your basic pool nightmare

    Interesting opinion by the leak guy. But not too relevant to my case as the the water level is way below the skimmer (3.5' or so) and the skimmer pipe drops straight down 10' so I can use a cheap amazon endoscopic camera to look for a big break. My little camera isn't good enough to really...
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    Leak deep underground, your basic pool nightmare

    https://www.americanleakdetection.com/diy-leak-tests/swimming-pool-water-loss-calculator/ Using this calculator which doesn't include climate (mine is dry and reasonably hot) suggest 300g per day to evaporation normally and perhaps 150g given the reduced surface area at this point. Very...
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    Leak deep underground, your basic pool nightmare

    I agree, I'm definitely a little hrmm about the continued drop but it was losing water closer to 4" a day at first. It's a little strange to me that it slowed steeply and suddenly (ie no reason to believe the leak is greater above). Last year when the HRV failed it ran hard ~4" a day until...
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    Leak deep underground, your basic pool nightmare

    Hi Rich, Thanks for the replies. I think maybe I've stabilized at the leak level. The loss of water has slowed to maybe 1" a day now. Is that just evaporation? I don't know but it ran fast to about 4.7' of water below coping and has slowed. After several days, I'm at 5.1' below coping...
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    Leak deep underground, your basic pool nightmare

    My valve is a couple feet away from the main drain. Think 1970s. I might be able to get the newer brass valve off without an impact wrench but to replace the old one I had to use an impact wrench with a 1000 lbs of breakway force (it barely got it done) and a 2" impact socket. Can't do that...
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    Leak deep underground, your basic pool nightmare

    Hey guys, Thanks for the quick replies. 1. The hydrostatic relief valve is a separate item from the main drain (I know what you mean: it's not a combo item). 2. The pool level has not been lower than groundwater table. 3. I agree with your theory that the hydrostatic relief valve is stuck...
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    Should I add a sump basin to my pool while its empty?

    Rich, Thanks for the input. Not so amusingly, I've sprung another leak. Just like last July. So the pool is busy emptying itself and I can mentally revisit the question of whether to alter the bottom of the pool shell. As a bonus two of those mature trees have decided to die and I'm...
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    Leak deep underground, your basic pool nightmare

    Jimmy, It's way below lights and return fittings. There has been a hairline crack in the slope from the deep to the shallow end for awhile but we are pretty much below that too. I've got the main drain, the hydrostatic relief valve and the plumbing returning the main drain and skimmer to the...
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    plumbing leak questions - liquid fix a leak

    Any luck? I'm busying chasing a leak now myself. I'd be curious to read the rest of your story.
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    Leak deep underground, your basic pool nightmare

    I'm resurrecting this thread. Right on schedule with last year, my pool is losing water again. I don't know how low it is going to go (been about a week that it has been dropping) but I'll see the bottom of the shallow end tomorrow or the day after. Just when I was getting ready to pull the...
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    Equipment overhaul: what to gut, what to salvage

    Thanks for the additional replies folks. My equipment is mostly really old. Heater: I don't know how old the Teledyne is. I'd guess 20 years. Pump: About 10 years old. Filter: It's a pac-fab. That should tell you... (again, I'm guessing 20 years old). The best item in this bunch is the...
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    Equipment overhaul: what to gut, what to salvage

    Thanks for the reply. A few replies and a few questions. Replies: Pump circuit: I have a 220V, 20A circuit to the pump area. It currently only services the pump. Lights circuit: I also have a 120V, 15A circuit to my lights. The lights circuit isn't run to the pump area unfortunately though...
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    Equipment overhaul: what to gut, what to salvage

    Hi TFP! I have a challenging pool and have struggled for years with it. It takes a long time to get to usable, is too cold when I get there, uses a lot of power to get there, etc. This year, I'm thinking of overhauling the equipment to see if I can make it more efficient and easier to...
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    What if the pool’s underground plumbing leaks?

    I know it's an old thread but did you find your leak? A couple thoughts for you based on my recent experiences: - Do you have a hydrostatic relief valve? Could it be letting water out? - In my area, American Leak Detection (a franchise company) charges maybe $450 to try to find your leak...
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    Should I add a sump basin to my pool while its empty?

    Hi guys, I hope this is the right folder for this question: I have a decent sized (25k g?) shotcrete pool that is 40 years old. Recently I have had some trouble with my hydrostatic relief valve (probably). I appreciate getting steered in the right direction here...
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    Leak deep underground, your basic pool nightmare

    Hi guys and gals, Thanks for all the replies. Details in case the magic of the internet leads someone to find this and need help tackling their own: I ordered a 1/2" drive 2" deep impact socket ($$) from Amazon and a set of impact extensions https://smile.amazon.com/gp/product/B006MPBZWY...
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    Leak deep underground, your basic pool nightmare

    Hi guys, Thanks for the info. The pool ended up draining itself to ~0.5' of water and I was able to use my cheapo amazon endoscope. I popped the drain cover; no extra fittings under there. I got about an 8' view of the main suction pipe and things seemed pretty ok (it's hard to get a great...
  27. Pool_HydrostaticReliefValve.jpg

    Pool_HydrostaticReliefValve.jpg

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    Leak deep underground, your basic pool nightmare

    I'm not aware that I have a hydrostatic relief valve. Once it drains out entirely, which I think will happen, I'll take another look and maybe put up some photos. Edit: Are they sometimes part of the drain assembly (i.e. could it be under the floor suction grill?)
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    Leak deep underground, your basic pool nightmare

    Hi guys, I'm new to this forum and having a terrible week pool wise. I'm hoping to get ideas and directions for how to DIY a repair as the local pool industry here is not very deep and is very busy. I've got a shotcrete (smooth concrete) pool with a gunnite surround. It's about 40 years old...
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    New to the forum, pool owner for 10 years, still can't get it right

    Hi, First time on this forum. Decade long owner of a 40 some year old shotcrete/gunnite pool that has not been easy to deal with.