Mxer.
Sorry to hear..tough lesson most growers have to learn the hard way when they start
Hopefully some damage control can salvage something here, but burning looks pretty serious..I read some good advice here though.
To summarize..the excessive nutrients have made your soil toxic to the plants..you need to flush them (reverse osmosis water)...If you have enough perlite in the soil you can probably give them a second flush back to back..use your judgement as too much saturation of water can start rotting roots...remember plant is now shocked and likely not uptaking nutrients and water like normal.
Second, you'll want to do some defoliation of the burned fan leaves..you need to get some light penetrating into the canopy to absorb energy...Try not to overdue it..once the plant is in flower and the fan leaves are burnt you get backed into a corner as the plant is now putting energy into buds not new leaves..
Otherwise, fingers crossed hopefully you see the plant stabalize in a week or so..unfortunately your crop will likely be compromised both in terms of quality as well as harvest.
Best of Luck
Toad
