Light Burn?

Hi, i am after some help please.
I am thinking its light burn ie. leaves are taco-ing and the upper leaves are more yellow than the lower ones but need some 2nd opinions.

Photo from clone.

Plant is about 5 weeks into flower.

Medium is BioBizz Light mix compost.

I was feeding
Biobizz Grow @ 1.5ml per litre,
Biobizz Bloom @ 3ml per litre.
3g Epsom Salts dissolved into 10L (2.5gal) water
1ml per litre liquid seaweed.

I have recently changed over to Hydrocrop, my other plants are loving it and so far are showing no problems.
These symptoms were showing before switching to Hydrocrop. (was hoping if its a nute defiency and would clear up)

Temps are
Lights on 30.C (86.F)
Lights off 26.C (78.F)

She is in a 20L (5gal) fabric pouch and she drinks regulary every 48 hours.

Light is a Lumatek Attis 300w and its about 30cm (1 foot) above canopy

I don't think it's light burn if your LED is 1 foot away above the canopy, it could be heat stress due to the temps being 30c. But it looks like it could be a nutrient deficiency or a lockout to me. I could be wrong though, I'm not 100% sure what the issue is but if I was a betting man I would say it's a nutrient deficiency or a lockout.

Heat looks like the main issue.

Heat is ok if you can keep the root zone cool/moist.

Looks as if the roots are cooking/dying at the edges of your pot especially if they are fabric pots.

The buds look a little stressed as well? But could just be genetics