floor jet bubbles

I have a 40-50 year old pool and spa combo where the spa spills over into the pool. The 3 "jets" are actually connected to the return line from the filter pump (no dedicated jet pump) and they are venturi type jets. I have a 1.5" PVC air line running to an upside down P-shaped air intake near...

Hello, I am getting bubbles for about 5 seconds each time the paramount floor jets move to the next cycle. It seems to be more in the deep end jets. I started with suction side and changed O ring on pump basket but then discovered that if there are no bubbles in my pump basket, it is the...