I moved into my first house 7 months ago, and it has a pool. I have kept the same pool service that the previous owner had since they had done some work on the pool and he was happy with them. When i signed the contract for the service, they tried to sell me a new filter, saying that my existing filter was too small for the pool and solar system. I have been hesitant to do anything since it sounded like a sales pitch rather than advice.
For months i've been seeing DE in the spa, and I've had a big problem with bugs, and bug parts on floating in both the spa and the pool. I figured there was probubly a tear in one of the grids letting DE and some bugs through, so last week I had my filter serviced by the pool service company, and they replaced 3 grids and the standpipe O-ring, and they said that overall the old grids looked pretty good. I was hoping that would have fixed my problem, but there is still stuff blowing into the pool. I put filter bags over the returns, and saw lots of DE and bugs mainly coming through the spa return, so the problem hasn't been fixed.
One wierd thing I have noticed is that the filter pressure is always high(25-30psi), probubly why the pool company thought i needed a bigger filter. One speculation I have is that the pump is too big. Some of the plumbing seems to be 1.5" which is probubly why i'm getting high pressure.
I noticed my Navigator pool cleaner has never really worked as good as my brothers, and he told me to use the vaccuum gauge checker to check and make sure it's getting sufficient vaccuum. I hooked up the gauge to the cleaner hose, and it's no where near the recommended pressure, and the pump makes air bubbles in the strainer basket if I adjust the valvles to pull more from the pool cleaner.
I'm going to take the multiport valve apart this afternoon and ckeck the gasket to make sure stuff isn't just blowing through it, causing my problem with bugs and DE.
I'd really like some input or ideas from some more experienced pool owners or techs. I'm a DIY'er, so ditching the pool company and doing all of this myself doesn't scare me. My pool and equiments is all listed in my signature, please let me know what you think, or let me know if you need any more info.