Hi there, Thanks for taking the time to read my post! We have been given an Intex 24' x 52" Ultra-Frame Above Ground Pool which has been uncovered all winter and looks pretty nasty...but hey, I'm not gonna pass it up! My question is when would you recommend cleaning it - while it's full with the dirty water, after it's drained, or after it's moved and re-filled? Any advice on the best cleaning method would be awesome too! I'm clueless on pool maintenance but I'm looking forward to learning! I'd like to stay away from chlorine if possible because I'm allergic. If the non-chlorine alternatives won't cut it I'll just be a little itchy!