I've noticed that I'm getting air bubbles (not many, only 1 or 2 shooting out every 10-15 seconds) coming from only one of my 3 return jets. It's the return that is the farthest from the equipment pad. This return is on the deep end of my pool. Since I only see bubbles coming from that one return jet and not the other two, does that automatically narrow it down to an air leak in that one return line's plumbing? I've never noticed water in the ground anywheres. If the air leak was from my pump, wouldn't it affect all 3 return jets? Just trying to figure out what might be the cause. It really doesn't bother me, but I figured I'd ask.