I've been troubleshooting a spa leak. Have it narrowed down to the main drains/suction line for the source of the leak. While troubleshooting, I pulled the drain covers off and noticed these 2 holes with no plugs. Should these bottom threaded holes be plugged? I am noticing that when my spa is fully drained, a few inches of water will find its way back in through these main drains. I'm assuming this is ground water and not sure if it's coming in through these bottom holes or if it's coming in through a line leak to the main drains. Any ideas or knowledge with these open threaded holes down there? I've attached a picture without the covers on. Thank you
Spa Leak
- Thread starter smac22
- Start date
Not sure what the third hole is, but the two with the yellow circles appear to be the sumps with side ports to connect the two together as main drains are required to be split and then connect under the surface to the single suction pipe that goes to the pump. Here's an example of a Hayward (upside down):
Yes that's it. I vacuumed out the debris and water and it appears those are plugged from the underside, BUT... 5 min after vacuuming, those underside plugs were already filled with water so that pretty much confirms they are leaking when they spa is full and ground water is getting in when the spa is drained. See Pic (The 3rd hole is for a water feature I can screw in, non factor) No idea how I'd get those sealed up since they are plugged from the underside. Any ideas? When the spa is full, it loses a good amount overnight. I've replaced all the check valves and tested all the returns, light, etc... (dye tests and plugged) so this is definitely the source of a leak.
