It hurt a bit, getting joints moving, even with the support of the water. I spent three-quarters of an hour in the pool, and had a thorough work-out. (Or as thorough as I get.)
I found that after so long away from the pool, one set of ten repetitions of each exercise was as much as I could manage.
Today, my joints aren't hurting as much, and have a better range of movement than they've had for a while, but I am incredibly tired. It's always a challenge to balance the energy budget.
For a basic introduction to hydrotherapy exercises, see my earlier post: Hydrotherapy.
To understand my concept of the energy budget, see: The Energy Budget.