Hi Lori! Thanks for your reply I will google the PoolDevilPro and check it out....

I figured out what the problem is (was). Immediately before the impeller there is a "debris screen" mine was completely clogged. I knew the screen was there and figured I'd check it once in awhile, but didn't think it'd need daily attention given its location - hoses and connectors have to be dismantled to get at the thing. No wonder my filter cartridge was staying so clean - ALL the gunk that got through my skimmer sock was stuck was stuck in the debris screen. Kind of a wierd set-up, seems then the cartridge should go before the impeller - as is, nothing but pretty clean water will ever reach the filter cartridge and the cleaning of the debris screen will be a pain. I'm glad the impeller is protected in this way tho!

***Given what I know now about this pump/filter, I would never run it w/o a clean skimmer sock - very glad I even learned about them - from this site!!***

Thanks!