Yeah, Intex filters aren't the best. The bigger filter will help. What will also help -- and we are beginning to have reports that it helps a LOT -- are replacing the Intex cartridges with Unicel. Ironically, it will also save money, because a pair of Unicel cartridges will last all season, and the Intex cartridges are supposed to be replaced every 2 weeks!

I'll leave this thread open -- I have to go right now -- and post the links to the cartridges on Amazon this evening when I get back. In the meantime, look and see whether you have Intex A, B, or C cartridges. Matching them up is tricky, and it will save time if you can tell me which you have.