Bama Rambler said:
I hate to see you break up concrete without being sure it's the skimmer lines. Have you done a thorough inspection of the skimmers themselves and more importantly the pipes where they go into the ground or just below?
Also does it leak down faster with the pump off than it does with it on?
You mentioned that the filter had problems, are you sure it wasn't leaking out the waste port and just looked like the skimmers because the bottom of them is where the pump lost prime?
(Follow up question at the bottom)
When I say "break up concrete" I meant that we have a concrete patio, but on the side there is a retaining wall that is about 1.5 to 2 feet from the skimmers that I was actually planning on ripping down since most of it is just stacked and not mortared together. Also, along with the skimmers being close to that wall, the pipes from the pump/filter are running into that retaining wall.
BUT
I changed my mind anyway. I just sort of used a bit more process of elimination, and since the leak in the pool was coming out beneath the retaining wall right under where all the pipes went in, I just assumed one of the pipes was cracked right there. So, I broke up a cinder block or two that were on the top of the retaining wall since they were actually cemented down. Then, I just unstacked the retaining wall blocks.
Good news:
It's not the skimmers. Yay!
Bad news:
It's the main drain. Boo! The pipe running from my main drains has about a billion cracks in it. It's dripping water everywhere once the pool gets over a certain level (I'm assuming when the pool water level gets higher than or even with the level of that pipe... to make it not leak, the water would barely be cresting the edge of the skimmers. That might be okay, but question follow-up below.
Do I really need the main drains? I know they help filter the water, but could the skimmers do it themselves without relying on the main drains? If not, I think I'm just going to swim down there and cap the drains with some sort of PVC accessory after I take the screen off of it. If I DO need the main drains, I assume I could just run some temporary drains down to the bottom of the pool in the same way that I ran temporary returns into the pool. Does that sound feasible?
Thanks!