Hey guys need some help, what does this look like

Plays are in FFOF im using calmag and h&G nutes, this is 17 days since flip, first 5 photos are nirvanas northern lights and the rest are barneys LSD, growing 4 plants of each strain, 1 of the 4 in each giving me a problem. Temps and rh in check ph also in check, thoughts?

bump

Crappers... figured I'd give you a bump for some help too.

Hope you figure it out.

It looks like heat stress at first glance, but you say your temps are fine so meh. But it looks like it's only on lower leaves so I wouldn't fret over it.

Perhaps the lack of light is causing burns in the lower leaves because photosynthesis cannot process the nutrients without adequate light?

appreciate it guys, on the northern lights I is the middle top where it is happening. Does nute burn happen all over or only 1 plant here and there?

bump

What is the growing medium? Could be hot. Keep an eye on new growth and see how it looks. Definitely clip the bad leaves to help prevent pests.

soil FFOF

FFOF is naturally hot out of the bag. If you have been giving your plants nutrients from the beginning then what you have there is an excess, not a deficiency. Your thumbnails didn't load for me so I can't get a really good look at your photos. Next round try this: 40% FFOF, 40% Happy Frog, 15% perlite and the remaining 5% a mixture of worm castings/bloodmeal/bonemeal. That mix will give you a solid first month, no nutes needed. From there you can start a 1/4 strength nute program escalating to full strength.

how can I check excess, does runoff ppm help at all, also using drip clean to maintain salt buildup