I'm starting to make a filter for my pump - Intex / Bestway.
I got a plastic bottle cut it to the correct size and found two gravy lids made of plastic. Made holes in them
I have a large enough polyester 25 micron filter coming
So hopefully all will be well, but i found something from EZCLEANFILTER this person has made a washable filter i think its $40 and postage is separate. they got a video on youtube.com