i have a 75g tank right now with a 20g sump. the sump has a filter sock i dont remember the micron rating, and some bio balls. im tired of cleaning out the soft as it clogs pretty much over night even after pulling it out of the washer and looking clean. i bought 5 socks from mcmaster idk if i got the wrong type if that my problem. anyways i have a spare 29g tank i will be switching in for the 20 as a sump, and will be buying kaldnes media and getting rid of my ceramic rings and bio balls. what would you guys recommend for mech. filtration, poret foam from swiss tropics, matala foam or new socks i have looked at other ones on mcmaster that are longer and polyester material?