Cecil:
I know that you won't see this 'till this evening,
but do you want to try those 2 large aquarium heaters that I have? They are either 300 or 400 watts each.
That is a generous offer, and Cecil can do anything he wants. But, I would advise to let it come in naturally. At 62F, with an RBC, it will work very well once it comes in. To augment to a degree that would increase daily operating costs, really is not worth it.
One thing I would suggest is to come up with a cover to keep out as much light as possible.
