Any saving it?

This plant is slowly withering away, any saving it?

It was flourishing up until the last month or so when I noticed it started having browning leaves. I assumed it was a Phosphorous deficiency after looking at a symptom chart. I have sprinkled in some bone meal into the soil a couple of times but hasn't seemed to help. Any suggestions?

Outside in 7 gal cloth pots
Happy Frog for soil
MegaCrop two part for nutes.

I haven't fed it in over a week now, just water, hoping that a flush might help.

If you think you've got a deficiency how in the world would you think flushing would be smart.

Looks like you're dealing with just a little bit too much heat

Well, upping the P & K didn't seem to help so I thought maybe there was an excess that was causing the deficiency