so im using the cartrage that came with my intex 633 and I understand my pool still has tiny junk floating in it but omg it only take like 4 minutes maybe 5 before the pressure drops a lot and by like 10 or so I need to pull it out to clean it, it stops the pressure completely almost......is the cartrage just junky cheap too? ill assume its not the best....is there a better one I can buy and could any of you send me a link to them? thanks so much