Grower420John said:

Hi I am fairly new to growing and my leaves do have a nitrogen toxicity I know that can people give me advice on best ways to eliminate n toxicity. I am using advanced nutrients for the veg the veg coco an and b , cal mag, b52, piranha and tasty terpenes. 1ml/L for the a and b, 1ml/L of cal mag, 1 ml/L b52, 0.5ml/L piranha and 0.75ml/L tasty terpenes for week 3 is this a good ratio ? The toxicity I think was from an older feeding where I gave too much. Coco has been flushed.
Also another concerning problem I have attached 3 images what do you guys think this is spider mite ? Powdery mildew ? Nothing? I have no clue. The little orange brown things don’t move could this be coco coir what I’m using ?
Please help me out guys.

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Grownsince95 said:

Just from that picture it doesn't look like N toxicity.

There's no PM.

If nothing is moving under the microscope you're usually good to go.

I see pre-trichomes already. These are a protection against strong light. The picture looks like a leaf struggling to make enough chlorophyll under intense light.

How old is the plant? Need pictures of the whole thing for a better diagnosis.

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RoadKillSkunkHunt said:

Can you post a full plant picture both from the top and from the side. One of the most common mistakes a new grower tends to make is over-lighting their plants. I'm not saying you are but its one of the things that crosses my mind looking at your leaf.

I agree with @Grownsince95 - Need full plant pictures. Also some more history about the plant, the lighting, its environment and so on.

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RoadKillSkunkHunt said:

Can you post a full plant picture both from the top and from the side. One of the most common mistakes a new grower tends to make is over-lighting their plants. I'm not saying you are but its one of the things that crosses my mind looking at your leaf.

I agree with @Grownsince95 - Need full plant pictures. Also some more history about the plant, the lighting, its environment and so on.

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RoadKillSkunkHunt said:

Can you post a full plant picture both from the top and from the side. One of the most common mistakes a new grower tends to make is over-lighting their plants. I'm not saying you are but its one of the things that crosses my mind looking at your leaf.

I agree with @Grownsince95 - Need full plant pictures. Also some more history about the plant, the lighting, its environment and so on.

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Grownsince95 said:

Just from that picture it doesn't look like N toxicity.

There's no PM.

If nothing is moving under the microscope you're usually good to go.

I see pre-trichomes already. These are a protection against strong light. The picture looks like a leaf struggling to make enough chlorophyll under intense light.

How old is the plant? Need pictures of the whole thing for a better diagnosis.

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Grownsince95 said:

100% correct I was just overthinking it. Sometimes my brain starts making stupid connections when I'm stoned.

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Grownsince95 said:

Overall the plants look great! They're definitely well fed and well lit. They can all be a little wonky when they're young. Like teenagers.

The really short internodes and the slightly patchy older leaves maybe suggests the light is pushing them a little hard. The leaf you showed in the op is an old bottom fan leaf. The plant is likely pulling some Mg from below for the top. Chlorophyll molecules need an Mg atom at the center of every one.

The wrinkles on some are probably a calcium thing. I see it all the time with young plants in coco and they seem to grow out of it. I think it mostly happens if they grow into dry areas or the whole pot dries out too much.

I would just keep doing what you're doing and keep paying attention like you are.

Just keep in mind that less really is more sometimes. The majority of cannabis plants are killed by love, not neglect.

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Grownsince95 said:

Overall the plants look great! They're definitely well fed and well lit. They can all be a little wonky when they're young. Like teenagers.

The really short internodes and the slightly patchy older leaves maybe suggests the light is pushing them a little hard. The leaf you showed in the op is an old bottom fan leaf. The plant is likely pulling some Mg from below for the top. Chlorophyll molecules need an Mg atom at the center of every one.

The wrinkles on some are probably a calcium thing. I see it all the time with young plants in coco and they seem to grow out of it. I think it mostly happens if they grow into dry areas or the whole pot dries out too much.

I would just keep doing what you're doing and keep paying attention like you are.

Just keep in mind that less really is more sometimes. The majority of cannabis plants are killed by love, not neglect.

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Grower420John said:

Ok so you think maybe I should lower the light intensity? The brown spots are normal? I thought I was deficient in something haha. So honestly on a whole you think it’s going pretty good?
What about the leathery appearance of some of the fan leaves ?

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RoadKillSkunkHunt said:

I do, yes ... not a bunch but a bit. You can also raise the light a few inches.

I'd also like to hear more about the environment. Particularly your VPD. I see the one photo showing VPD at .98kPa. That's about right for their size, but leaves do look swollen in some of the pictures.

How often are you watering your plants? What is the night time temp and humidity?

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RoadKillSkunkHunt said:

I do, yes ... not a bunch but a bit. You can also raise the light a few inches.

I'd also like to hear more about the environment. Particularly your VPD. I see the one photo showing VPD at .98kPa. That's about right for their size, but leaves do look swollen in some of the pictures.

How often are you watering your plants? What is the night time temp and humidity?

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Grower420John said:

Ok so you think maybe I should lower the light intensity? The brown spots are normal? I thought I was deficient in something haha. So honestly on a whole you think it’s going pretty good?
What about the leathery appearance of some of the fan leaves ?

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Grower420John said:

Also how come the fan leaves on the biggest plant are drooping even with lights off ? I really hope you are right in that they are ok I just want to be sure.

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Grownsince95 said:

If by brown spots you mean the little necrosis on the tips of the leaves that's a very slight nutrient burn not deficiency. The leathery appearance is what I was talking about before but I called them wrinkles.

Leaves droop like that for a bunch of reasons. High temp/low rh, over or under watering and light stress just to name a few. Try pointing the fan in the corner more directly at it for a week and see if there's a difference. Sometimes the slightest adjustments are all you need. Tents will develop micro climates if you don't move your fans around periodically, even the oscillating ones.

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