i was going to buy another bag as mine has about had it, but went and purchased a filter mount, filters, and drum strainer this morning. total about $60 (a good deal in shipping). all i will ever have to re-purchase are spin-on filters. i may expand the system in the future for greater flow. all i need now is npt to hose barb fittings for the hose. i hope it works well. im tired of bag filtering...