Glad to have found this site again!! Got a new pool this year a 20'x48" Intex Ultra. In the middle of a SLAM right now, crazy hours at work and getting sick slipped on my maintenance. The pool has been great, only thing I haven't cared for is the filter it came with a 2100 sand filter. I would like to upgrade to a better filter as the 2100 seems anemic for a pool of this size. I came across and article on in the swim about filter upgrades. They recomend the Hayward X-Stream 150 sq. ft. and the Hayward Perflex 25 sq. ft. filters. I was considering the X-Stream but in the maunal it says to not use with storable pools, any particular reason why?