First time grower; Am I getting a phosphorus deficiency?
- Thread starter Slebber
- Start date
Semper.Fi
Well-Known Member
Ok so yeah, at a rough guess I'd say you are loosing around 30% of your fan's CFM rating, with the filter and the amount of ducting, try to hav eto ducting as taught, (less wrinkleds)as possible so it's as smooth as possible on the inside, fan defo needs upgrading to an RVK at least.
She's looking good though from what I see of here. leaves reaching the sky is always a good sign
~_
She's looking good though from what I see of here. leaves reaching the sky is always a good sign
~_
Slebber
Member
Might be a stupid line of thought but is wind burn a thing. It occurred to me last night that the dry spots and leave damage are all areas that are focused directly/closest to the fans?
Picked up RVK 150 A1 Fan(428M3/HR), Rhino Pro 150 x 300 Filter, 5M Alu ducting, should be here tomorrow.
Picked up RVK 150 A1 Fan(428M3/HR), Rhino Pro 150 x 300 Filter, 5M Alu ducting, should be here tomorrow.
Last edited:
Semper.Fi
Well-Known Member
Sorry bro, died on m couch after Blue Cheese!! That's my sleep cycle "to pot" for a few days, lol
I think I'm looking at PH swing issues with those fan leaves . . . . . . though some of the temps you've been hitting, it is possible that that the leaves have been subjected to constant, very dry air from the fan in the area, causing a micro barron climate in that area, I don't think burn has ever been the right word for it imho . . . .
Give those fan leaves in question as 1/4 strength feed in a folia spray ever so often to keep the area near the ciurc fan a bit more humid; it's quitre good practice to have a number of fans, andto alternate their postitions every few days so therea re no "blind spots" as far as air flow is concerned, and can eliviate micro climates on the drier side forming . . . .
~_
I think I'm looking at PH swing issues with those fan leaves . . . . . . though some of the temps you've been hitting, it is possible that that the leaves have been subjected to constant, very dry air from the fan in the area, causing a micro barron climate in that area, I don't think burn has ever been the right word for it imho . . . .
Give those fan leaves in question as 1/4 strength feed in a folia spray ever so often to keep the area near the ciurc fan a bit more humid; it's quitre good practice to have a number of fans, andto alternate their postitions every few days so therea re no "blind spots" as far as air flow is concerned, and can eliviate micro climates on the drier side forming . . . .
~_
Last edited:
Semper.Fi
Well-Known Member
Is there any possibility of any of your nutrient solution could have splashed onto those blotchy leaves???
Slebber
Member
Its possible that they got wet since its the end I'm feeding from but I am pretty careful.
If you look at pic 2312 on page two, those fan leaves in the bottom right corner that are hanging down. That there is where my fan sits and blows, it's also where the problem leaves are isolated too.
The little bit i was noticing on new canopy growth is the area that would be dead centre to the top fan. Its why i started to think that maybe fan burn was a thing. I've moved them around so I'm going keep an eye on that one.
Oh, also, took receipt of some Dutch Pro Multi Total this morning. Plan is to put some in with tonight's feed.
Checked the bottle and it say 2ml/1l first go then, 1ml/1l every two weeks. Sound about right?
If you look at pic 2312 on page two, those fan leaves in the bottom right corner that are hanging down. That there is where my fan sits and blows, it's also where the problem leaves are isolated too.
The little bit i was noticing on new canopy growth is the area that would be dead centre to the top fan. Its why i started to think that maybe fan burn was a thing. I've moved them around so I'm going keep an eye on that one.
Oh, also, took receipt of some Dutch Pro Multi Total this morning. Plan is to put some in with tonight's feed.
Checked the bottle and it say 2ml/1l first go then, 1ml/1l every two weeks. Sound about right?
Last edited:
Semper.Fi
Well-Known Member
Ok could well be a harsh micro climate happening around the fanny area then (lol) . . . . good to move them, we'll see ifg there is an improvement.
Dutch Pro, yeah go with the label, but if I'm on a heavy feeding schedule, I'll use 1tsp gallon once a week, I also have fulvic and humic acids working hard with DP too making for a furiously active root zone
PH everything going in to 6'5 to 6.6PH, aim for a good quart of run off, and all will be well.
~_
Dutch Pro, yeah go with the label, but if I'm on a heavy feeding schedule, I'll use 1tsp gallon once a week, I also have fulvic and humic acids working hard with DP too making for a furiously active root zone
PH everything going in to 6'5 to 6.6PH, aim for a good quart of run off, and all will be well.
~_
Slebber
Member
All fed and watered, ran it in at ph6.3 the new run off was coming back as 6.4 so feeling okay with that.
Still getting a few more of these yellowing spots poking up, was peeking around inside the middle of the plant, checking it over, when this dead leaf fell out.
This normal?
Looks like a bit of burn there... doesn't seem to be any more like it thankfully.
...EDIT: you know what, I think I've found it, Leaf septoria or Yellow leaf spot. Pretty sure that's the culprit, else its hinting at an N deficiency.
Still getting a few more of these yellowing spots poking up, was peeking around inside the middle of the plant, checking it over, when this dead leaf fell out.
This normal?
Looks like a bit of burn there... doesn't seem to be any more like it thankfully.
...EDIT: you know what, I think I've found it, Leaf septoria or Yellow leaf spot. Pretty sure that's the culprit, else its hinting at an N deficiency.
Attachments
Last edited:
Semper.Fi
Well-Known Member
Leaf Septoria, it's a fungal growth, hope it ain't that . . . .
Some strains display that black scorch from lack of Potassium. Does your plant have luster?
PH is good
Some strains display that black scorch from lack of Potassium. Does your plant have luster?
PH is good
All good
SPLFreak808
Well-Known Member
Definetly P lockout/deficiency.
Semper.Fi
Well-Known Member
hmmmm dunno u know . . . . . reckon the lone leaf looks closer to this one . . .
Than this one . . . .
~_
Than this one . . . .
~_
SPLFreak808
Well-Known Member
It is a bit tricky to look at. To the OP where exactly did this leaf fall from? And did it fall with no effort to stay at all? Do you have any negitive signs on new growth?
Semper.Fi
Well-Known Member
Semper.Fi
Well-Known Member
Cool, keep everything going at a steady 6.5 now . . . . .
And another thing, Multi Total if you haven't dosed them yet, I was gonna say, add the MT first watering after a feed on it own with water, I always seem to get a more . . . ."dramatic" effect that way . . . . no worries if you've done it with feed already . . . .
~_
And another thing, Multi Total if you haven't dosed them yet, I was gonna say, add the MT first watering after a feed on it own with water, I always seem to get a more . . . ."dramatic" effect that way . . . . no worries if you've done it with feed already . . . .
~_
Semper.Fi
Well-Known Member
The other main reason I thought it might be K more than P is the temps the grow has been hitting . . . .huge demands on transpiration, which is fueled by K, no?
~_
~_
SPLFreak808
Well-Known Member
Sup guys, sorry took a bit to reply, I'm at work. Sorry i missed the info about where that dead leaf came from. This plant could easily be showing signs of more then one deficiency/lock-out. When P gets locked out, the leaf kind if dries up and shrivels but holds a flat green color,dead purple/blue/brown/black splotches can confirm that, eventually that leaf WILL fall from the plant without yellowing, very much like N deficiency. When you have K deficiency you will for sure notice the leaf having a two tone kind of color, the darker end by the petiole and yellow end at the end followed by severe dead necrotic spots. Its hard to diagnose somebody' else plant without actually getting a feel for myself. But to the OP, if you watch you're growth take note of the beginning of any spots/colors/ briddle stems/dry spots ect in order.