Re: Honey temperature
If it is partly crystalized you will have to raise the temperature up to 140 degrees at least and more likely 150 to get rid of all of the crystals.
That sure seems like a HUGE tank. I have two Maxant Bottling Tanks which each hold 25 gallons each, which is plenty for me. I bottle as much as 30,000lbs of honey per year using both of them.
I can't imagine washing out a 55 gallon bottling tank.
"It's not what you look at that matters, it's what you see." Henry David Thoreau, Mark B