I have a 22" baqua pure "big blue ball" from Rec Warehouse. Out of curiosity.....do you live in a cold climate and do you winterize your pool? I live in North Carolina and the pool maintenance fellow from a different pool supplier told me NOT to winterize and to run the filter for a couple of hours every night during months it's not in use. He said this will keep the parts moving and keep water filtering through the pump and filter. It will prevent freeze, plus prevent the parts from "seizing up". I did not know the filter was notorious for cracking. If I had to replace my filter, I'd probably opt for one that splits in the middle (I believe the Hayward is made this way). It's easier to change the sand when you need to.