: We used a little floating dolphin thermometer from the baby bath section of the store to make sure it stayed the right temp. When our water heater was spent we heated pots of water to add until the water heater was ready to roll again. Then, once it was full, it was pretty easy to maintain the temp. They'd use the big pots to take out the water and just turn the hose back on with hot water. It gave dh something to obsess about during labor.
5/27/06 at 8:47pm