Phosphorous lockout? (Pics)

[hot cheetos]

This plant has been showing these symptoms for a while now. I was hoping I fixed it but it's been slowly getting worse. It's the only plant out of 16 that's turning purple leaves and now buds too.

I'm not sure what to do to help it. Any suggestions guys?


My setup:

3 gal fabric pots 100% coco. Top fed by hand with watering wand 1-2 times per lights on, drain to waste always 20% or more. Dyna gro nutes 600-800ppm. 4000 watts.

 

[Bbcchance]

What are light on/off temps in the room? Cold stress can cause purpleing also, i started using silica in my grows to help the plant handle stress more, also raised my temps a bit, but havent seen as much purple in my stems since these changes have been made

 

[hot cheetos]

What are light on/off temps in the room? Cold stress can cause purpleing also, i started using silica in my grows to help the plant handle stress more, also raised my temps a bit, but havent seen as much purple in my stems since these changes have been made

I've see it go as low as 63 but I definitely don't have a cold issue, I'm struggling with heat. The 63 might have been for maybe an hour or two . It's usually 68-74 but I hit up to 82 sometimes. And it's only this plant that looks like this, all the rest look fine.

 

[Dr. Who]

They're all in the same area?
Soil or Hydro?
What are you feeding and give the concentrations.
Night temps? Day temps?

LOL, never mind, I read your OP again - getting to soon old and blind....

You do have low RH and that's making it uptake faster - that makes me think it's reacting to higher K !!
Elevated K can encourage a plant to color.

The thing is, I pause on it being with the others in the same environment.....Could simply be a pheno more prone to by several factors.

At any rate, raise the RH in that area....

 

[Bbcchance]

I've see it go as low as 63 but I definitely don't have a cold issue, I'm struggling with heat. The 63 might have been for maybe an hour or two . It's usually 68-74 but I hit up to 82 sometimes. And it's only this plant that looks like this, all the rest look fine.

Only one in thw whole lot? That is a bit of a head scratcher eh... Any recent root stresses? New steak for support? Any way to check lower or trapped by screen?

 

[hot cheetos]

They're all in the same area?
Soil or Hydro?
What are you feeding and give the concentrations.
Night temps? Day temps?

LOL, never mind, I read your OP again - getting to soon old and blind....

You do have low RH and that's making it uptake faster - that makes me think it's reacting to higher K !!
Elevated K can encourage a plant to color.

The thing is, I pause on it being with the others in the same environment.....Could simply be a pheno more prone to by several factors..

At any rate, raise the RH in that area....

Thanks for the reply. I never mentioned my RH lol how do you know its low? It is low however, as i put in a dehumidifier because it used to be too high and i was getting PM. It used to be 60-70. I put in a dehumidifier and now it holds it below 50. Usually about 45 sometimes dipping down in the 30's. However, these symptoms were present even when the humidity was high

Only one in thw whole lot? That is a bit of a head scratcher eh... Any recent root stresses? New steak for support? Any way to check lower or trapped by screen?

Thanks for the reply. No root stress as far as i know. I did flush all the plants for 2 days (4 feedings) with gradual 300-400ppm in case i had lockout of anything. I will mention though that this plant ends up being the driest out of all 16 so it is drinking and eating the most. It is also surprsingly the plant that has the fattest buds ??? ...considering that it seems unhealthy it kills me to think how much fatter the buds would have been if i didnt have the issue or if i could fix it. No steaks, they are under a scrog.

 

[CriticalCheeze]

Phosphorous def usually starts in the middles of the leaves. Im dealing with it with my auto magnum, other pheno is fine but this one has grown fucked up since day 1. Leaves will cup up and curl a bit aswell with phosphorous def.

 

[hot cheetos]

Phosphorous def usually starts in the middles of the leaves. Im dealing with it with my auto magnum, other pheno is fine but this one has grown fucked up since day 1. Leaves will cup up and curl a bit aswell with phosphorous def.

I truly have no idea if it is phosphorus deficiency or not. But I've looked at phosphorous deficiency pics on Google and they look very similar.

I've also looked at Molybdenum deficiency and that looks very very similar as well!

Any thoughts on Molybdenum deficiency ?

 

[Lordhooha]

I truly have no idea if it is phosphorus deficiency or not. But I've looked at phosphorous deficiency pics on Google and they look very similar.

I've also looked at Molybdenum deficiency and that looks very very similar as well!

Any thoughts on Molybdenum deficiency ?

What mutes are you running?

 

[hot cheetos]

What mutes are you running?

I mention it in the OP. Dyna gro nutes at 600-800 ppm. But again, all plants are getting the same food. This is the only plant with these symptoms.

 

[bryan oconner]

is this the tallest plant closest to the light ?

 

[hot cheetos]

is this the tallest plant closest to the light ?

No its actually one of the shorter ones. I scrogged too late and 3 of my tables ended up too stretched and close to the light. I tied them down. This 4th table consists of the 4 runts, and thankfully they were the smaller ones because this table ended up being the best one in terms of filling out the screen properly and an even canopy. It never displayed any unhealthy symptoms on veg.

 

[bryan oconner]

strange . once in a wile i will get one that is not healthy and every other one is happy . keep doing what your doing the others are good so keep it up . when i get these freak sick plants some times i even feed them there own nutrients with a lot more ppm some times it helps half the time .

 

[CriticalCheeze]

I truly have no idea if it is phosphorus deficiency or not. But I've looked at phosphorous deficiency pics on Google and they look very similar.

I've also looked at Molybdenum deficiency and that looks very very similar as well!

Any thoughts on Molybdenum deficiency ?

If your PH is within the right range then molybdenum should NOT be locked out or deficient, as it is a very mobile element, issues will arrise in the middle of the plant first (after oldest leaves) then spread outward.(looks very similar to N def but just starts in different areas first)

 

[hot cheetos]

If your PH is within the right range then molybdenum should NOT be locked out or deficient, as it is a very mobile element, issues will arrise in the middle of the plant first (after oldest leaves) then spread outward.

I hand feed so I don't know how accurate runoff numbers are but I'm always around 4.5-5.0 PH on the runoff. And always 200-400ppm higher than what I put in. As I mentioned before, when I saw those runoff numbers along with some issues I suspected a lockout and flushed them for 2 days with 300-400ppm water. Runoff ppm came down from 1000-1200 to 600-800 and the PH went up to 5.2-5.4. But it never stabilized to the 300-400 and 5.8 that I was putting in.

I don't know if I had lockout or not. After the flush many of the leaves turned a lighter green as if to indicate that they were hungry for more food. I've gradually started to feed 750-850ppm again.

 

[Dr. Who]

I truly have no idea if it is phosphorus deficiency or not. But I've looked at phosphorous deficiency pics on Google and they look very similar.

I've also looked at Molybdenum deficiency and that looks very very similar as well!

Any thoughts on Molybdenum deficiency ?

NO way! Not with any Dyna nutrient! Most micro problems come from PH lockouts - not your problem.

The RH is showing in the canoeing of the leaves......Could also be heat - put your hand in (palm down) under the light at the canopy level.....Hand get hot? feel hotter then it should? Move light up and increase the RH.......I still suspect it's a differing pheno from the others (if they're from seed)! K sensitive and expressing that fact.......I mean come on, it's one of 16 and all are the same?

Always remember that clones will adjust to environmental factors! THAT, is NOT genetic "shift" as many who don't understand believe!

 

[hot cheetos]

NO way! Not with any Dyna nutrient! Most micro problems come from PH lockouts - not your problem.

The RH is showing in the canoeing of the leaves......Could also be heat - put your hand in (palm down) under the light at the canopy level.....Hand get hot? feel hotter then it should? Move light up and increase the RH.......I still suspect it's a differing pheno from the others (if they're from seed)! K sensitive and expressing that fact.......I mean come on, it's one of 16 and all are the same?

Always remember that clones will adjust to environmental factors! THAT, is NOT genetic "shift" as many who don't understand believe!

Interesting. Yes I had heat issues, it's been hitting 100 degrees outside these few weeks. Honestly, even 4-5 inches from the bottom of the light my hand isn't uncomfortably hot. Feels like if it was 1-2 inches from a T5. They are air cooled and I have fans blowing above the canopy.

 

[CriticalCheeze]

Sounds like it is the pheno. If all the others are as healthy as they look than honnestly. Just follow a regular schedule and watch it. Like dr.who said. it could just be that particular plant. If it was hitting 100 F the air is most likely pretty dry.

 

[Dr. Who]

Yeah distance is fine by the pics!

 

[Dr. Who]

Sounds like it is the pheno. If all the others are as healthy as they look than honnestly. Just follow a regular schedule and watch it. Like dr.who said. it could just be that particular plant. If it was hitting 100 F the air is most likely pretty dry.

Air tends to be drier in low temps and more "moist" or "heavier" in warm ones. This is where over dehumidification happens. If the dehum runs at night, it tends to do it more often. The plants are not transpiring at night and the RH tends to drop on it's own. Mine run 24/7... presetting is nice, but they tend to overrun presets by 10 points.....that can be the problem...