Leaf Margins Turning Yellow

[Jelimafish]

So I checked my PH Meter and it was still calibrated. I will do the slurry test when I am off of work just to see what it comes back as. The humidity in the tent drops to 15% pretty quickly so I have been wetting towels along with the humidifier which keeps me closer to 40% and when lights are off that bumps to 50-60%. I have not watered since Friday and the pots felt pretty light this morning so after lights come back on tonight I am just going to water them and see what happens. The yellowing does not seem to have spread to any other leaves and it doesn't look like that light feeding last week had any negative effects.

 

[Aqua Man]

So I checked my PH Meter and it was still calibrated. I will do the slurry test when I am off of work just to see what it comes back as. The humidity in the tent drops to 15% pretty quickly so I have been wetting towels along with the humidifier which keeps me closer to 40% and when lights are off that bumps to 50-60%. I have not watered since Friday and the pots felt pretty light this morning so after lights come back on tonight I am just going to water them and see what happens. The yellowing does not seem to have spread to any other leaves and it doesn't look like that light feeding last week had any negative effects.

They look fine now, new growth is better. Humidity as you say could be better. Those bottom leaves resting on the soil I would consider removing right at lights out. They will not be able to transpire well and the little micro climate they make around them in an invitation to pests and mold. Normally I would not remove any leave but if they are resting on soil or anything for that matter I feel it's best to remove em

 

[nicolajanjak]

there is something they dont like .. how far is your light from the canopy?
i never used led
but looking at the photo i find the light being too bright .. for a vegging/not top health plant
probably the culprit

no humidity problem thats for sure .. except if you run in the high 80f .. and if it was the case you would see taco leaves ... (too strong vpd)

 

[Jelimafish]

there is something they dont like .. how far is your light from the canopy?
i never used led
but looking at the photo i find the light being too bright .. for a vegging/not top health plant
probably the culprit

no humidity problem thats for sure .. except if you run in the high 80f .. and if it was the case you would see taco leaves ... (too strong vpd)

The light is 24" from the canopy and is running only at 120W. They may look a little droopy today but I am pretty sure they are just thirsty since this is the longest they have gone without being watered. Here is a photo from yesterday.

 

[Jelimafish]

Just wanted to post a quick update because I think I found the issue. I fill up a bucket or jug with water then use an air stone to bubble off the chlorine. Prior to watering I was PHing the water however I always have water left because I only have 2 small plants. I assumed that the PH would stay at the level it was when I checked however it seems that after sitting for a few days the PH goes back up from low to mid 6's back to 7-7.5. This means that while most watering was done at the correct PH there were definitely some done where the PH was too high. I will start checking the PH before every watering instead of assuming that the PH Down will hold it at the correct PH. I also removed those bottom leaves that were too close to the ground, raised the light a bit more to play it safe, and think I may remove some of the bigger fan leaves that are blocking a lot of light from the new lower growth.

 

[Aqua Man]

Just wanted to post a quick update because I think I found the issue. I fill up a bucket or jug with water then use an air stone to bubble off the chlorine. Prior to watering I was PHing the water however I always have water left because I only have 2 small plants. I assumed that the PH would stay at the level it was when I checked however it seems that after sitting for a few days the PH goes back up from low to mid 6's back to 7-7.5. This means that while most watering was done at the correct PH there were definitely some done where the PH was too high. I will start checking the PH before every watering instead of assuming that the PH Down will hold it at the correct PH. I also removed those bottom leaves that were too close to the ground, raised the light a bit more to play it safe, and think I may remove some of the bigger fan leaves that are blocking a lot of light from the new lower growth.

I leave all growth unless it's resting on other leaves or soil causing condensate. I feel the plants benefit from them.

 

[Brotofsky]

Keep those solar panels, just tuck them down below new branches

 

[Jelimafish]

Keep those solar panels, just tuck them down below new branches

I will try the tuck first and see how it goes. Now my only concern is them both being Male, hopefully at least one is Female. With such a small grow space I probably should have opted for Fem seeds. Luckily I do have (2) Humboldt Green Crack F1 Fem Seeds and a Fruity Chronic Juice Fem Seed along with the other 8 Bison Breath Seeds and about 50 random bag seeds so while it would suck at least I have a few options and 3 that almost guarantee I will get some ladies. I guess I will know it the next week or 2.

 

[MIMedGrower]

Why does everyone think the leaves of a plant block light? They absorb light as energy.

Leaves are plucked because of humidity and airflow in a professional grow. And some advanced growers take extra grow time controlling growth by defoliation. Careful planned defoliation.

Why do standard gardening techniques that are used as tools for a specific job get all confused and become either or on these forums?

Defoliate or dont defoliate, flush or dont flush, ph or dont ph etc. these are not do or dont do subjects. There is a purpose and a reason why. Or the grower is just playing with his plants for no benefit.

Sorry. I am getting fed up with the repetition and misinformation.

 

[Aqua Man]

Why does everyone think the leaves of a plant block light? They absorb light as energy.

Leaves are plucked because of humidity and airflow in a professional grow. And some advanced growers take extra grow time controlling growth by defoliation. Careful planned defoliation.

Why do standard gardening techniques that are used as tools for a specific job get all confused and become either or on these forums?

Defoliate or dont defoliate, flush or dont flush, ph or dont ph etc. these are not do or dont do subjects. There is a purpose and a reason why. Or the grower is just playing with his plants for no benefit.

Sorry. I am getting fed up with the repetition and misinformation.

Much agreed

 

[Jelimafish]

Why does everyone think the leaves of a plant block light? They absorb light as energy.

Leaves are plucked because of humidity and airflow in a professional grow. And some advanced growers take extra grow time controlling growth by defoliation. Careful planned defoliation.

Why do standard gardening techniques that are used as tools for a specific job get all confused and become either or on these forums?

Defoliate or dont defoliate, flush or dont flush, ph or dont ph etc. these are not do or dont do subjects. There is a purpose and a reason why. Or the grower is just playing with his plants for no benefit.

Sorry. I am getting fed up with the repetition and misinformation.

Honestly not sure about anyone else and as stated this is my second grow so I was going to take the bigger leaves off because they are sitting directly on all the new growth, these plants are pretty bushy so I thought it may help in some way.

 

[Aqua Man]

Honestly not sure about anyone else and as stated this is my second grow so I was going to take the bigger leaves off because they are sitting directly on all the new growth, these plants are pretty bushy so I thought it may help in some way.

If you lift the leaf up and there is water/condensate on the leaf below it and you can't move it so this does not happen then chop the fucker off and pray for your sins.

 

[MIMedGrower]

Honestly not sure about anyone else and as stated this is my second grow so I was going to take the bigger leaves off because they are sitting directly on all the new growth, these plants are pretty bushy so I thought it may help in some way.

I understand. Misinformation all over these forums tell us to do it. But what really happens is the leaves absorb the light and that energy combined with nutrients that also require leaves transpiration to get where they are needed is what grows those shoots and branches.

And flowers dont need direct light either. I get massive buds below the canopy.

 

[Jelimafish]

I should have put this in the other post but this is exactly why I post before I do much of anything, to get real world feedback. There is soooo much information out there and it seems that a lot is nonsense, I have learned more from the people in this forum then pretty much anywhere else!

 

[MIMedGrower]

If you lift the leaf up and there is water/condensate on the leaf below it and you can't move it so this does not happen then chop the fucker off and pray for your sins.

That is needing more airflow. The leaves should flutter. I adjust environment not cut up healthy plants.

 

[Jelimafish]

If you lift the leaf up and there is water/condensate on the leaf below it and you can't move it so this does not happen then chop the fucker off and pray for your sins.

With my very real struggle of keeping the humidity at 30-40% I don't think I need to worry too much about moisture building up anywhere

 

[Jelimafish]

With the advice from everyone here I am just going to do my best Buffalo Bill impersonation and work on the tuck!

 

[Aqua Man]

With my very real struggle of keeping the humidity at 30-40% I don't think I need to worry too much about moisture building up anywhere

Your humidity won't matter it's the plants transpiration that will build up on the leaves if it's laying on another leaf or anything else trapping the moisture. Low humidity increases transpiration. Plants transpire from the underside of the leaves.

 

[Aqua Man]

I'm not trying to tell ya to chop them off just trying to give you the info so you know what to look out for. Like @MIMedGrower said there are reasons why these things are done or not done. But if you don't know the reason it's hard to decide. I don't remove any leafs unless it's needed.

 

[Jelimafish]

I'm not trying to tell ya to chop them off just trying to give you the info so you know what to look out for. Like @MIMedGrower said there are reasons why these things are done or not done. But if you don't know the reason it's hard to decide. I don't remove any leafs unless it's needed.

I think because this is all so new and exciting to me I am just trying to find reasons to mess with them when I should be just letting them do what they do with as little as interference as possible, it is hard though!