nix4me

Like the Clown says, you have found some jets. That air sucking in is normal. Called a "venturi" and that "T" you found is the airline for those jets. If you dislike this feature, you can plug the airline and the bubbles will stop. Or you can get crafty and add a ball valve to reduce the air flow and regulate the bubbles. *Note on the valve: a local hardware store should carry one- oh and don't buy a cheap one. They will break and get sticky after a while. Get a nice quality sch 80 valve or something. Best would be a serviceable one, like a 2-way "Jandy" valve. Here is the valve I would put on (assuming the pipe size makes sense and you have room): Jandy Look online and order one, just find out the pipe size and put it inline, under that "T". Shoot, if you want send a picture and we probably can help out more if need be. Ok, you were exactly right. I already have a valve that controls those jets. I just never knew that it would suck air in because the old pump was so weak. After 7 years in this house, i finally understand the pool system! As a test, i turned the jet jandy valve to the seat ports only and it boils like a spa for sure! Its a little tricky to keep adjusted due to the difference in presure when my solar heater is on or off. With the solar on and the jet valve neutral, there is no venturi effect. With the solar off, there is. It will take some getting use to. But at least now i know how it all works. Thanks so much for the help.

i replaced my pump today and i'm having a weird problem. Old pump was 3/4 horse and worn out, new pump is 1.5 horse Sta-Rite. Pool is 12,500 gallons gunnite in florida. After firing up the new pump, i heard a gargling sound from beind the pool. After investigating, there is a pvc pipe coming up out of the ground back there with a T on top. The sides of the T are open. I always wondered what this pipe was for, never bothered asking anyone. That pipe is gargling and sucking air i think. Also, the 2 jets above the seat (directly in front of where the pipe is) are blowing mega bubbles. I started thinking about this. Is this suppose to happen? Are those jets on the seat supposed to be like spa jets or somehting and blow bubbles like that? Are the bubbles intentionally created by that pipe sticking up? Or, do i have serious problems?