Heya yo, good morn and junk.
So the damaged leaves probs wont recover, they hopefully wont get worse but once that damage is done its done.
Now the new growth however should be symptom free, so watch for healthy new growth and old growth that doesnt get worse.
On the calmag front, im using some calmag that has no additional N in it.
Cant remember the brand off the top of my head, but i do know Roots Organic also carries a calmag that has no N in it either.
I hate N toxicity, it sets my teeth on edge!
On the clawed leaves, N tox has a specific claw look to it. Kinda looks like the leaves have been overwatered and therell be a very sharp claw tip pointing down.
Too much light can make leaves claw as well but theyll kinda claw upwards, i think peeps refer to it as "canoing"
Sorry yo, im weed hungover from last night and in a ramblin mood lkl