Amy Dixon: I checked into the waterbob a bit more as I found 2 I didn’t know I had. I checked out laying them on the floor over a tarp. It states to make a frame which could be made of wood. Doesn’t need to be as tall as a tub, but just enough to support the sides. It also stated that the water will last from 4 to 16 weeks depending if you treat it or not. The waterbob states 4 weeks and that is untreated. I would say to use a bit of bleach or maybe the water preservative tablets. That should take it to 16 weeks with no problem. Since I now have 4 of them and only one bathtub, I am going to make a frame to put on the tarps and then set waterbobs in frame to fill up using the water preservative tablets. The plastic seems to be pretty strong and BPH free.
