Necrosis between veins on fan leafs in veg.

These guys are from seed and seem to be having an issue in the fox farms ocean forest. Any one have any ideas?

Necrosis between veins and on blade edges.

Temps are 78-82 humidity is 52%.

Cali Con -artists GSC


DNA Tangilope


G13 labs Blue OG

All of them are 3 1/2 weeks into veg.
1/2 gal pot size

Cali Con Greencrack

How close are those lights? & what kind, t5? Looks like light burn/stress on gsc and crack. Possible cal/mag deficiency. . .

T5HO's. Flower bomb kush is doing ok and so is dinafem' cheese in the same gear.

Lights were 5-6inch distance

Moved them to 10-11". See if that helps. Thats for the reply sean tom.

Check out some mag deficiency pics and threads. That may be an issue. If you think that may be the cause try a very light foiler spray of epsom salts. It usually effects the lower leaves and not new growth though. Good luck!

Check out some mag deficiency pics and threads. That may be an issue. If you think that may be the cause try a very light foiler spray of epsom salts. It usually effects the lower leaves and not new growth though. Good luck!

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I was going to say calcium as well, waterdog is right though those kinds of issues usually show up on lower foliage first. Seeing that your 400w was only 5 to 6 inches, is leading me to believe that was your issue. Hope it clears up!
Happy growing!