I was all set to order a pentair quad 60 DE filter for my 24' AGP(yes I know its a bit much for a pool this size) I called pentair tech support with a couple questions before I made the purchase, and they are telling me that this filter is too big to use with the pump I have. My pump is a 3/4 hp Pentair Dynamo 2 speed. He said it was rated up to 75gpm and the quad was rated at 120 gpm. Said that I would not have sufficent flow for the filter. Does this sound right? I have read on here numerous times that a bigger filter was always better. Never thought that the pump would be insufficient. The FNS24 filter was suggested for me instead. Would the quad not work with a 3/4 2 speed pump?