hi,
I read recently here on CureZone,somebody was in pain,had taken in 3quarts!!!!
maybe that wAS you,anyway,NO,using enemas should not hurt!Take only 1 quart at a time,start the first one with clean filtered water.
As your bowel gets used to the enemas,you can then increase the intake of water
I can't say what temperature,I use my elbow to test the water.If you are in doubt,stay on the cool side!
hope this helped