Stop with the epsom salt. It's fine for correcting magnesium defeciencies, but you're killing 'em with an overdose. I'd flush well on your next watering day. Find and read the "Epsom salt isn't a miracle cure" thread...

It's tougher to downsize than it is to upsize. I'd leave 'em where they are.

What are you using for nutrients? They still need to be fed.

If humidity is that high, I'd avoid spraying them. Mold issues develop quickly, especially in a warm, humid enviornment.