I have read in some threats in other forums that people are using waterfilters in their waterloop to keep it clean ,actually those things are quite big and not really cheap . Now i was thinking : what about using fuelfilters , those small inline filters . They are dirt cheap at any place and easy to work with .Small enough to fit anywhere in the case . Many of them even work with different tubing size from 6-10 mm . Would that make any sense or would it add to much restriction to the waterloop ????