Briefly summarized, according to one aspect of the present invention, a hydrotherapy unit comprises a housing and an elongated open tub mounted on the housing for holding {HEAD ~ a volume} of {TAIL ~ fluid} 
of
Briefly summarized , according to one aspect of the present invention , a hydrotherapy unit comprises a housing and an elongated open tub mounted on the housing for holding { HEAD ~ a volume } of { TAIL ~ fluid }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL