Need help identifying problem

[MaPilot]

I've looked at all the charts and did a semi-flush 3 days ago, Not sure if this is nute burn or heat stress? Hopefully someone can chime in and give em a hand.

Im growing in FF Happy Frog, using FF Nutes as directed every other watering with calmag in between. Lights are a good 30" above the plants, right now running a 600w mh air cooled hood. Temps in the tent are around 73f.
I'm Growing OGKush from a local seed provider. First purchase from him.

Thanks for any advise.

 

[bobrown14]

Why all the Cal/mag?? Plants don't need much Mg.

 

[MaPilot]

I guess i don't have a good answer for that. Just didn't think it would hurt. Do you think its nute burn?

 

[bobrown14]

No likely too much cal/mag. Give it a break for a week or 3 and see what happens.