Here's my problem:
1. I have DE leaking into the pool: It seems to be worse when the pump is off... when I keep the pump on, and brush all of the DE over a few days, it gets much better.
2. Air is getting into the filter: When I turn the pump off, there is clearly a air 'seeping' sound at the filter. It seems to be coming from the bottom of the filter. Added to this, I've noticed some dripping from the bottom but it stops after the pump is on for a while... Another symptom is this: when the pool filter turns back on, there's a serious stream of large bubbles exiting the jets for about 3-5 minutes.
My take is that the o-ring at the bottom of the filter is shot (or there is a leak in the housing itself at the bottom of the filter), and when the pump is off, this leak 'pushes' DE back into the pool. Over time (pump on/pump off) it builds up, which is why I notice more and more in the pool over several days/weeks.
My questions are:
1. Does it sound like I'm on the right path before I start taking things apart?
2. Also, I'm thinking of getting rid of this Pentair 2000 and upgrade to the Pentair Quad with poly housing, since I have a SWG pool (my sense is the old metal housing doesn't have a chance in a salt pool).
I appreciate your help!