Thanks again for the replies. I will have to try to do this with the cover on. I realize this may not be the best solution but I will not be the one doing the work and really would hate for the person doing it to go thru all the hassle with it. The pool has the fencing kit around the whole perimeter of the pool so just undoing the cover is a pain. The plan is get the pump hooked up next week and see how bad the water is, then go from there.