I am unsure if I need a sock. Sump is 29 gal and tank 90. Could I use it part of the time as I hear it is helpful. I am not sure if I want to deal with cleaning more then once a week. I have sponges in my over flow also.
Regularly clean a sock, or try cleaning the gunk off of other stuff...... I think the sock would be the easier option to clean. It's a fact of aquariums, ya gotta clean, unfortunately.