Recently, I had a brand new Hayward Xstream 100sqft/1hp cartridge filter system hooked up to the 10,000 gallon pool (~21ft round, main drain, skimmer, one return) we inherited with the house last fall. We're not sure how long the pool was unkept, but it clearly fell into swamp/duck pond territory. After a very uphill battle, the water is now crystal clear with the exception of some sediment at the bottom.
I'd like to vacuum the bottom, but it appears the pressure of the system isn't running at it's peak (i.e. it's hard to get the vacuum plate to stay attached, return jet flow gets really weak 8-12 hours after cleaning the cartage). Running without the cartage, however, the return jet blasts nearly the length of the pool. So I assume that what I need to do is replace the current cartridge since cleaning with the hose isn't giving me sustainable pressure. Before I go and drop another $80-90 on a new/fresh filter, I was wondering if any of the gurus here could give me other ideas or confirm my suspension. Also, is there any way to salvage the month and a half old cartridge or is it scrap at this point?
Thanks in advance!