thats kind of iffy if it's pretty burnt....the parts that are damaged will simply stay that way unfortunately but I couldn't tell you about new growth. Sounds bad enough....maybe it would make some nice cookies or something.

Does your ppm meter have an e/c or mS/cm reading? If so and you can get both THAT number AND the ppm number at the same time you can work out at what conversion your meter reads. All I know is that its done by some sort of calculation by the meter and some meters read x500 conversion.. (hanna) and Rhizome mentioned to me that the truncheon he likes reads at x 700 conversion. So calibrating it to its OWN solution won't tell you what the conversion is.....make any sense.? However, it may be listed in your ppm manuel.

Good luck deja..

Ps...Bloom nutes AND Cal Mag.....