Please help a rookie grower out

[Grower420John]

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.

 

[Grownsince95]

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.

 

[RoadKillSkunkHunt]

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.

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.

 

[Grower420John]

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.

Hi man thanks for such a quick response wasn’t expecting such help !! This is start of week 3 veg I’m using a PPFD app on my phone may not be a good idea I know I just didn’t want to get a PPFD meter but I might have too my light is mars hydro 6500 Samsung led im running little over 25% dimmer maybe like 30-35% with 45 cm high from canopy. Also I will get you pics of all plants tomorrow as the grow is not on my property.
John

 

[Grower420John]

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.

Hi yes I will post a full picture and video of all 4 plants tomorrow they aren’t bad size for their age there’s just so many little things on the leaves telling me somethings up if you get me like looking from afar they look nice and dense for their age but as you get closer you start seeing little details which I will show tomorrow as I said to the other responder thankyou for offering help so fast I’ve been losing sleep over this haha I really want to be a good grower I find it fun just stressful lol.
Many thanks,
John.

 

[Grower420John]

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.

As for the environment I will list everything I can think of here:

Vpd - was at high 0.9 now gone up to high 1 lights off vpd is around 0.7-0.8
Temp - lights on 23-24degrees c, light off 18-19 degrees c
Lighting - From my maybe unreliable phone, 300-310 PPFD or 20 ish dli
I am using a humidifier to keep Vpd and using tap water for that I have no clue if that might be playing a role in anything.
Ec of water was around 1.0-1.1 and I mentioned the exact feeding mix I was running above.

 

[Grower420John]

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.

History wise it gets a bit more interesting as I said I’m new to growing I know all the terminology because I did a fair amount of research beforehand but practice makes perfect as they say I am a absolute rookie when it comes to the practical side of growing. And mediocre at best theoretically haha. Anyways I had a week where my carbon filter cover had gathered so much dust due to a vent being open on the tent because the sides were sticking in however now I have covered the vent back up because the tent was letting in far too much dust. But as the dust blocked the cover, the temp rose to about 27-28 c lights on for 4-5 days and the vpd sky rocketed to 1.3-1.4 this was only best part 4 days though about a week and a half ago. There was also a time I didn’t half my nutrients and used the dose on the feed guides and feed plants with 2 ec water which might’ve had some effect. Obviously this isn’t perfect but it’s my first time I just really need some help on correcting my mistakes before flower if possible. The strains I’m also running are: white widow, big bud, cereal milk and special kush just putting it out there in case maybe these white dots are strain dependant ? Anyways sorry for all the typing i will send follow up pics soon.
Thankyou all.

 

[Grower420John]

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.

I am not arguing with your statement about the trichomes but I have read that it could be strain dependant on whether they form early on or not? Just asking out of curiosity.

 

[Grownsince95]

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

 

[Grower420John]

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

Okok I am going to the place where I am growing pictures will be uploaded soon

 

[Grower420John]

Hi these are the plants the first pic is of the same leaf as yesterday however now there are patches rather than little dots I am looking through the leaves and I don’t see any signs of critters whatsoever.
As for the shade and texture of the leaves I really don’t know what’s going on there. I flushed last night with 1ml/L a brand calmag and ro water.
These are now day 17.
I really hope someone here can help me out because I really don’t think this looks good or am I slightly over-worrying? I don’t know

 

[Grower420John]

These are some additional pictures. Including a video where I thought it may be a critter but to me all these little brown things underneath the leaves look like dry coco coir that has blown onto the leaves

 

[Grownsince95]

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.

 

[Grower420John]

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.

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 ?

 

[Grower420John]

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.

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.

 

[RoadKillSkunkHunt]

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 ?

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?

 

[Grower420John]

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?

The night time temp is roughly 18-19 c and humidity in the high 50s but mostly in the low 60s. I am watering my plants once daily with about 1 litre each of water (watering till I see runoff) and I leave them for a bit to let excess water drain then empty the trays. The water temp around 20c and ec 1.0 with ro water that has 0 ec.
I will also probably raise the light soon.

 

[Grower420John]

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?

Are you sure this isn’t a case of n toxicity as the leaves are dark green and some tips are curled down slightly ?

 

[Grownsince95]

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 ?

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.

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.

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.

 

[Grower420John]

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.

Ok thankyou so takeaways from this are to move my fans around.
Feed more cal mag or just stay the same at 1ml/L?
The necrosis on the tips have just come on should I flush again for second day?
Also I will probably hang the lights higher up. Maybe like 3-4 inches ?
I believe my temp and rh are alright being night 18c and day 24c and rh between 58-66%?
I am also feeding once a day till I see runoff do you think I may be underwatering? Thanks.