2nd Grow need some advice

Alrighty I'm already into my second grow, about 4 weeks in. Harvested my first grow at the end of October and got about 3.5 ounces. Pretty happy with my first grow and with a single plant.

So my girl scout cookie plant is about 6 inches tall or so and some of the leaves have this kinda crunchy bit on em. Hoping to get some advice on what it may be.
400w MH
Ocean forest soil and water (no nutrients added so far)
And my oscillating fan. For a couple days I thought it was the fan maybe hurting the leaves I'm not sure.
RH is usually kinda low though, about 35-40.
And temp unfortunately is usually right at 80.
Thanks for any help.

Not very often at that 40% is it? Lower right?
Gets hotter then 80deg too eh?

The increased uptake of the plant is forcing a very minor show of nute burn...this is due to extended high temps and low RH
Fix one and improve the other.
Or reduce the feedings - pic 2 is high N from the above.

What light/s are you using.. Is this only one plant 4 weeks into flower..? O/forest has pre-loaded nutes in it .? What nutes are you going to use. ? I don't think you'll get 3.5 oz's off this grow. Good luck, happy growing
Gaz

Here's my advice, I had the same issue......I foliar sprayed my plants and the water would sit just like yours is. Imagine it as a mini magnifying glass allowing the light to burn the leaf easier. I solved my similar problem by reducing foliar spraying and increasing my circulation fan. Hope this helps

Dr. Who said:

Not very often at that 40% is it? Lower right?
Gets hotter then 80deg too eh?

The increased uptake of the plant is forcing a very minor show of nute burn...this is due to extended high temps and low RH
Fix one and improve the other.
Or reduce the feedings - pic 2 is high N from the above.

Click to expand...

Leaf tips don't really show the claw and burn tho like it should if it was hot nutes

Dan can grow said:

Leaf tips don't really show the claw and burn tho like it should if it was hot nutes

Click to expand...

There are many levels of the plant expressing over or under nutrient use (by the plant). How dark is the green of the leaves in pic 2?

You do not need an obvious "burn" or "claw" to say over feeding or high N.

He's doing his foliar at lights out - See the darkness around the rest of the pic.

BUT! You might be on to something......he could be overdoing the foliar! That could be another and likely source for the type of problem being expressed by the plant.

Just so you understand. Low RH and higher heat. Cause the plant to uptake more moisture. The moisture contains nutrients. The more it uses to keep cool and hydrated - The MORE nutrients are brought into the plant!

Think Vapor Pressure Deficit......look that up.....You do not have to follow exactly any VPD chart. You can dial in at differing RH values. The VPD does become very important when gassing!

Understand better?

All the grower says is they're using water and ocean forest soil. Why is there concern about foliar feeding? OP, are you doing this? It looks like water has been sprayed on the leaves, but there's no info about foliar feeding.
I think the leaves look pretty good. It needs to be remembered that ocean forest has nutrients and may be too hot for such a small plant. I wouldn't worry about the brown areas on the leaves right now, unless it gets worse. Even then, the grower would have to worry about finding the cause. This looks like a simple grow so it's unlikely the problem will get worse and jeopardize the plant. 80 degrees indoors is pretty warm but not terrible. A small fan will help.
Dr. Who, I don't understand many of your posts. How do you come up with this stuff?

polishpollack said:

All the grower says is they're using water and ocean forest soil. Why is there concern about foliar feeding? OP, are you doing this? It looks like water has been sprayed on the leaves, but there's no info about foliar feeding.
I think the leaves look pretty good. It needs to be remembered that ocean forest has nutrients and may be too hot for such a small plant. I wouldn't worry about the brown areas on the leaves right now, unless it gets worse. Even then, the grower would have to worry about finding the cause. This looks like a simple grow so it's unlikely the problem will get worse and jeopardize the plant. 80 degrees indoors is pretty warm but not terrible. A small fan will help.
Dr. Who, I don't understand many of your posts. How do you come up with this stuff?

Click to expand...

Dr Who.........all I can say about Dr Who is he is the only one on this site that I turn to directly when I have an issue I can't figure out. He has been spot on every time. Nuff said!

polishpollack said:

All the grower says is they're using water and ocean forest soil. Why is there concern about foliar feeding? OP, are you doing this? It looks like water has been sprayed on the leaves, but there's no info about foliar feeding.
I think the leaves look pretty good. It needs to be remembered that ocean forest has nutrients and may be too hot for such a small plant. I wouldn't worry about the brown areas on the leaves right now, unless it gets worse. Even then, the grower would have to worry about finding the cause. This looks like a simple grow so it's unlikely the problem will get worse and jeopardize the plant. 80 degrees indoors is pretty warm but not terrible. A small fan will help.
Dr. Who, I don't understand many of your posts. How do you come up with this stuff?

Click to expand...

Over 4 decades of growing and seeing the results....College helped a little too...

Sometimes you post things that confuse me BUT, that's fine,,,,,I'm Polish too!

Did you read my first post?

Dr. Who said:

Not very often at that 40% is it? Lower right?
Gets hotter then 80deg too eh?

The increased uptake of the plant is forcing a very minor show of nute burn...this is due to extended high temps and low RH
Fix one and improve the other.
Or reduce the feedings - pic 2 is high N from the above.

Click to expand...

The first part is addressing the human nature of understating problems that you know of....I formed my conclusion and the solution with that in mind.

Phoenix,

When plants are happy, the new growth is vigorous, so I have always focused my attention on the new growth
and how the overall plant is behaving. The new growth in the pics you posted appear to be healthy.

Would you mind posting a picture of your fan and the way it is set up in regards to the plant?
If the problem areas on the fringes of the older growth get worse and the plant is still going strong...
It could just be the wind.

Also, Fox Farm OF is a loaded soil. When young plants are transplanted into soil that is "strong", it can do a bit of damage.
Some strains are more sensitive to others. The leaves in question appear to be age of the original leaves at the time of
transplant and this may just be the case. When the new canopy fills in, just remove the old leaves. your plant will know what to do.

My 2¢.
Cheers!

Eagle-ize said:

Phoenix,

When plants are happy, the new growth is vigorous, so I have always focused my attention on the new growth
and how the overall plant is behaving. The new growth in the pics you posted appear to be healthy.

Would you mind posting a picture of your fan and the way it is set up in regards to the plant?
If the problem areas on the fringes of the older growth get worse and the plant is still going strong...
It could just be the wind.

Also, Fox Farm OF is a loaded soil. When young plants are transplanted into soil that is "strong", it can do a bit of damage.
Some strains are more sensitive to others. The leaves in question appear to be age of the original leaves at the time of
transplant and this may just be the case. When the new canopy fills in, just remove the old leaves. your plant will know what to do.

My 2¢.
Cheers!

Click to expand...

I use FFOF and knowing it is very hot soil I always mix 2/3 FFOF and 1/3 FF Lite Warrior, a little extra perlite and vermiculite. That mix seems to work very well even transplanting younger plants into larger pots.

dargd1 said:

I use FFOF and knowing it is very hot soil I always mix 2/3 FFOF and 1/3 FF Lite Warrior, a little extra perlite and vermiculite. That mix seems to work very well even transplanting younger plants into larger pots.

Click to expand...

I would like your post but I'm new here... so LIKE!

This one's 2 months old, looks pretty healthy. Good luck, and happy growing. Cheers!

Thank you Eagle-ize, finally someone here who makes sense. No one has addressed the issue of foliar feeding yet. I still don't know why people thought foliar was taking place. We see droplets of water on the leaves but this doesn't always mean foliar feeding. How people got into this idea, I don't know. We need to wait and see how the OP responds before anything else is said, defending Dr. Who or not isn't the issue. If the doctor has 4 decades of growing, then why not just tell people here what you do for success and call it good?
Afterall, maybe it is foliar feeding. No one knows right now. But since the grower said it was ocean forest and water, and nothing else... I didn't understand how foliar feeding worked its way in to this. We will see if more info is put up. (Pardon my confusion if I'm wrong).