Quote Originally Posted by Vaporiserlover
Only a few weeks to go now anyway
You've got a hell of a lot lot longer than a few weeks left till they're finished.

That isn't heat burn, it's nutrient burn. Never leave nutrient solution on the leaves. Especially with an HID light pushing the envelope.

Old leaves are old news. Keep an eye on new growth, as the old damage will never 'heal'. Leave the leaves alone. Don't remove the damaged leaves, the plant isn't done with 'em yet.