We have a submersible pump, same aS Slickcraft, but no filters. Water tests fine. The key is to get the pump/intake into deep water. Testing the water first will give more info about what you want to filter out. There is no storage tank, but there is a (air) pressure tank so the pump doesn't run constantly. There is a lot of filter info at
http://www.winnipesaukee.com/forums/...ad.php?t=20676
Perhaps hard to find since the thread title doesn't give subject matter?