Works Great in Pool!
We Opened it up, put on the 7 ft hose, plugged it in a ground fault plug, turned it on.  Put in in a Intex 58836EP Inflatable Mesh Lounge in the pool, put hose end at foot end, and put it on high, Great-a little strong, then Med-Great for upper and lower back and legs, then after a while Low-worked fine.  Then got out of mesh lounge and just sat on it on steps- need to have hose down or no air goes through top- worked fine for lower and upper back, then just floated on it like a raft-need a noodle for neck, worked great-then just put it around back under arms and just let it do the back.  I must say we just love it-after all the backbreaking decorating and moving boxes for holidays, using back rubs, my back Finally does not hurt anymore, thanks to the HoMedics BA-M200 Body bath spa!
Rating: 5 stars