Hi, just found this forum so hoping you can help as google isn't helping much!! I've had a hot tub for a few months now. I've got two filters in rotation, the filters were brand new with the tub so each filter has only had about six weeks total use each. I swapped filters over today and the one I have been taken out seems to be disintegrating around the edge of the plastic casing.... it only seems to be on one end, the casinggis blue and is also now a hazy white..... what am I doing wrong? Too much chlorine? I have a photo but not sure how to post it