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Any chance it could be light burn since it stays 84f in my cab

Thanks. But why would that cause the leaf to go pale ? I understand the burnjng tips from it. Just not the pale yellowing of the leaves. Humidity stays around 30 is that too low?

Space is 18"×36"× 60" Soiless mix with lime pelite and 1 tsp osmocote plus. Lighting is 250w hps with wing reflector light is now 12" away from plants, temp staying at 84f, have small fan blowing under bulb over canopy, 4" inline fan set on 3/4 power. My question is about a week ago one plant...

Well even the newes growth is doing it the yellow striping struck me as cal/mag problem, i ph my tap water to between 6.2 to 6.5 after i boil it. Thats what i water with and the soil this time around is miracle grow because honestly ive used it in tje past with no issue.

So is the cupping and yellow striping ph related or what should i do to fix the problem

Need help please

Please somebody help. See the yellow striping? And the leaves kind of cup at the tips

Veiw these pics does it look like a deficiency

Here are some better pics. Leaves have wrinkling, striping, and some king of cupping. This particular batch is in miracle grow soil with a dose of cal mag

Agreed. Just dont think its nute related. Ill post better pics tommorrow. Btw the strains ane ghs chemdog and sensi seeds northern lights

No, its soiless with osmocote + and lime mixed in.

Yes my grow wardrobe sits directly on top of my ac vent in my apartment. It draws air from there. Thats why i titled this "something in the air" every single plant out of 40 has had this problem . Ph , soil everything is good. ill post better pics tommorrow. Btw all these batches of plants go...

Third batch of seedlings to have this problem, too many deficiency guides and pictures all look alike. Please help. At 10 days in my grow box every single plant from all 3 batches do this. Tips bend down, yellow streaking on new and old leaves. Ph spot on 6.4, pro grow 180, plenty of exhaust...