Leaves folding upward indicates heat stress.
Flushing with peroxide- why did you do that?
Epsom salts is a good way to burn your plant and should only be used when you know you have a magnesium deficiency, and then I always recommend a foliar feed instead.
Now you have to flush all the salts out of there. You need lots of drain holes in your container. Lose the tinfoil- mylar or white paper is preferable. Get your temps down below 85 degrees TOPS.
Thank you KB for the WONDERFUL suggestion, I'll move this thread to plant problems just for you!