Hi guys. I have a Pentair FNSP 48 filter and ended up ordering a new set of grids after I popped the lid today to clean my current set. Noticed not only weird stains but one grid had a hole which was causing DE to flow into my pool.
Q1: Does the top look normal after removing the lid what with all the buildup?
Q2: What are those stains?
Q3: Is that pressure screen thingy in good shape (it was compressed inward so I popped it out with my finger)?
Q4: Are Unicel FS-2004 filter grids a suitable replacement?
Thanks,
Daniel
Q1: Does the top look normal after removing the lid what with all the buildup?
Q2: What are those stains?
Q3: Is that pressure screen thingy in good shape (it was compressed inward so I popped it out with my finger)?
Q4: Are Unicel FS-2004 filter grids a suitable replacement?
Thanks,
Daniel