Odd Leaf Formation - Need Help Identifying

Specs:

Environment: Indoor Tent. Full ventilation w/ outside air intake and 16” hurricane fan for airflow. Night temps (lights off, daytime outside) 68-72, day temps (lights on, nighttime outside) 66-70. Humidity 40-50%. No supplemented CO2.

Lights: ES 300 x 2 at 25% intensity

Medium: Coco, Peat Moss, Perlite mix in fabric pot

Nutrients: Full Cyco Veg line + Power Si + Pure Blend Tea + Microbe Life.

Irrigation Schedule: Once every 2-3 days

Plants: 18 plants, 9 different strains all from seed. Week 5 Veg.

Strains: Tahoe OG, Deadhead OG, 818 HB, Colonel Crunch, Passion Berry, Gary Poppins, Velvet Heat, Lemon Skunk and Blueberry.

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Okay guys, having an issue with leaf formation on almost every plant. Some of the tips of the leaves are rough in texture and curved to the side. I’ve seen this before but not at this magnitude and not on every single plant. It’s mostly on the Tahoe OG and Lemon Skunk and specifically on top and lower growth. Thought maybe it was genetics but it’s on every plant from multiple breeders. No sign of any bug damage on plants and no sign of fungus gnats flying around. Hoping this is an environment issue or a nutrient issue and not some type of systemic disease or virus. Plants are in week 5 of Veg and this is something I noticed maybe a week ago or so.

I’ve been spraying Athena IPM (love this stuff) for preventative measures at preventative concentration right when the lights come on. Thought maybe that could be the problem, so I’ve stopped, but I’m not convinced. Thought maybe it could be wind burn/stress because this 16” can be OD sometimes. I’ve redirected airflow so it’s not directed towards any plant.

Hope this is enough info. Let me know what you guys think. Hopefully it’s a simple fix! Haha

- Nico

What is the PPM of your nutes?

BTW, you wrote, "Night temps (lights off, daytime outside) 68-72, day temps (lights on, nighttime outside) 66-70." I've considered doing that myself, running lights during nighttime hours for the temperature differences.

simpleleaf said:

What is the PPM of your nutes?

BTW, you wrote, "Night temps (lights off, daytime outside) 68-72, day temps (lights on, nighttime outside) 66-70." I've considered doing that myself, running lights during nighttime hours for the temperature differences.

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Always run lights 7pm to 7am flower cycle, hydro cheapest during off peak hours. Or on 24hr flip so no pesks and valleys just constant useage. About the OPs question on leaves ld say its a genetic trait before something environmèntal. Only guess l have to give. Dont think you did anything wrong.

Southernontariogrower said:

About the OPs question on leaves ld say its a genetic trait before something environmèntal. Only guess l have to give. Dont think you did anything wrong.

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You might have missed the part where he has nine strains on the go
That pretty much means grower error to me

Herb & Suds said:

You might have missed the part where he has nine strains on the go
That pretty much means grower error to me

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Yup missed that, seems a bit more relevant now, still could be anything? Retarded growth like that, cant think what stress or deficiency would cause that, ld choose the latter of the two.