I have a pool that was probably installed back in the mid 80's. I've owned the house since '97. I have always noticed a few bubbles coming from one of the jets but not too bad.
the pool has a spa so it has to return lines one for spa & one for pool with a 3-way valve. Back in march my main drain started leaking (pump wouldn't prime unless I valved it off) and I was loosing 2" of water a day. I had a pool company remodel the pool because I had been patching everything along for a long while & having trouble finding outdated parts.
here is what was done.
1. stripped pool & replaced all tile & diamond bright.
2 installed new main twin drain with new home run back to pump (nothing reused).
3. Installed Vacuum Port (didn't have it before) and ran back to pump.
4. new filter system, salt system, new valves & re-plumb everything at the pump but reused my existing pump (re-built recently).
now I have a lot of bubbles out of all of the jets.
the pool company tried everything listed below to get the bubbles to stop.
1. pressure checked all suction lines (they said all OK)
2. replaced my pump with new pump.
3. replaced a couple of valves.
after all of the above still have a lot of bubbles all jets pool & spa.
last week they were out and pressure tested both return lines.
they said they wouldn't keep pressure and both must be slightly broken & that's where the air is coming from.
what's bothering me is my pool gets a lot of sun (south florida) & I run it 8hrs a day 7 days a week and have not needed to add a drop of water since the initial filling of the pool back in april.
I know this is a long lead up to the question so here it is.
does it seem possible that both return lines could have broken under ground and put out almost the same amount of bubbles in the pool & spa without losing any water ?