Title says it all. I've got lots of fine debris after opening. When I try to vacuum i lose auction after a few minutes. My main drain and skimmer tie into one pipe that goes to the pump. I ran a new pipe out and I'm having the skimmer replaced next week partly because it has some repair work done to it and also because I want to be able to isolate it from the main drain so I can vacuum with full auction. My question is this, is there a standalone pool vacuum that will pick up very fine debris. The po is a 20000 +/- gallon in ground gunite pool.