I have a couple more days of leveling left for our 15x48 intex. Upon your advice, Im going with the Krysatl Clear SWS. My wife just picked up the 14" Intex 1600 GPH sand filter. I just noticed a sale on the Intex 2650 GPH sand filter, with a price differance of only about $20. Do you guys think I should upgrade to the big guy, or is it just too much on my 15x48? (Which I think is approx 4400 gallons.) Thanks again!