I have had a sump for a few months now and have gone through a number of different types of filter socks in order to get the best balance of filtration and ease of use. These 50 micron nylon socks are by far the best I have used. Great filtration and the spray clean in seconds under my shower head. Just thought I would share....

http://www.discountfilterstore.com/n...bn-420-50.html