I have no idea why the air stone broke. Too much pressure is only reason I can see.I'm getting a new tub. Bleach water for the old stones, air lines, and the heater. What part bleach to a gallon of water ?I think the problem comes from having kept the water level too high. The bottom off the lid was always wet. I had used layers of duct tape and then drilled holes through it. The tape seems to have separated and such which could be the biggest chance of recurring slime as I can't clean in there. The temps are similar to my previous successes. I can't remember off my last good run had used rooting gel or not. These last two did not. All prior runs did, but my success rate wasn't ever good.After a lot of reading it appears that I shouldn't submerge my roots, though had success doing so in the past.I'm going to wipe down my cab walls with bleach water.Sterilize my equipment with rubbing alcohol.Going to hack up the mother.Put all the cuts in a cup of water for 24 hours.45 degree cut under water.Dipping in cloning gel.They will be divided up and put into my new cloner, cups of coco, cups of perlite if I have any left or can buy it, and a cup of water in the window. Went to my grandmother's the other day and she had a clear glass full of beautiful roots on the windowsill. Wish I could just take some to her and say work your magic. Ha. Strange she doesn't do well growing plants but seems great at rooting things, or sprouting seeds.I have one small cut in flower. I put 6? In my flower tub and only one rooted. Wish I had a way to test DO. May need to do something different with aerating the tub.