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Nitrogen Toxicity????

stihgnobevoli

stihgnobevoli

Active member
Veteran
SOIL:

How long has this problem been going on? Bout 3 weeks

What STRAIN are you growing? Some Bagseed looks like mostly indica

What was the establishing technique? (seed or clone?) seed

What is the age of your plants? like 4 months or so.

How Tall are the plants? between 12 and 24 inches

What PHASE (seedling, vegetative or flower) are the plants in? flower

What Technique are you using? (SOG, SCROG etc) Lst

What size pots are you using? (Include how many subjects to pot) i dont know, im using some 1quart paint buckets i bought at casaDePot.

What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) im using some organic soil i bought, i mixed it with like 25% perlite and 10% or so beach sand.

What Nutrient's are you using?How much of each with how much water? How Often? *Knowing the brand is very helpful* I believe the first time i watered back in june i used alaska fish emulsion in a regular dose. then i fed regular water till like middle of july where ive dosed alaska morbloom at regular dosage 2x in a 2 week interval. i water the plants like every 2 days. so total feeding has been 1 dose alaska fish 2 months ago or so, and 2 doses of morbloom once 3 weeks ago, and once last week.

What is the TDS/EC/PPM of your nutrients used? fuck if i know

What is the pH of the "RUN-OFF"? about 6.2 using drops so its somewhere between 6 and 6.5

What method of pH test was administered? Using Strips? pH pen? ph drops.

How often are you watering? like every2-3 days when the pots get dry.

When was your last feeding and how often are you feeding? a week ago. not very often as the leaves look very green.

what size bulb are you using? 70w hps

What is the distance to the canopy? like 2 inches to 8 inches

What is your RH Factor? (Relative Humidity) currently 35%

What is the canopy temperature? currently 85 degrees

What is the Day/Night Temp? (Include fluctuation range) day temp usually about 85-94 depending on ambient. night temp is about 79/80 so flux between night and day is about 6-15 degrees.

What is the current Air Flow? (cfm etc.) i dont know. 3 exhaust fans 280mm and 1 120mm passive intakes all in the bottom of cab.

Is the fan blowing directly at plants? 1 fan on the floor blowing up. shales 2 pretty good, the 3rd one doesnt move much but then again its just 1 big cola.

Is the grow substrate constantly wet or moist? no.

Is your water HARD or SOFT? hard

What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? tap

Has plant been recently pruned, cloned or pinched? no

Have any pest chemicals been used? If so what and when? none

Are plant's infected with pest's? nope
Click to expand...
all the large fan leaves with the exception of like 5 are all curling under and clawing like your typical over nitrification. but im not using any ferts, in organic soil. the rootball may still have some of those miracle gro time release pellets in em but after 2 months those shouldnt be working like this should they? i been feeding no nitrogen except whatevers in the soil, added morbloom for P and K, no N in it. flushed on 3 seperate occasions now. same deal. ill have pics in a minute.






 
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C

CheifnBud2

If the soil is dry, flush it a bit and check the ppm and ph. If not dont water for a couple days. and then do that.

Hard water sux. Get a 50-250 dollar filtration system or fork out big bux for bottled.
 
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M

medical_shed

No point in checking ph in compost as the medium acts as a buffer. Looks like the middle plant is hungry to me.
 
stihgnobevoli

stihgnobevoli

Active member
Veteran
i let the pots get pretty dry in between waterings, i thought maybe it was just the ph flux when the pots get dry. but the ph in the runoff isnt too low. i dont know if they need more food because the leaves clawing up like that is a sign of too much nitrogen. i dont understand how there can be too much nitrogen at the top of the plant yet the bottom leaves are being drained for food. the leaves are all way too green also. i would like to say lockout but the ph is in range. im stumped if anyone has a clue im all ears.
 
T

toodles

What is the Day/Night Temp? (Include fluctuation range) day temp usually about 85-94 depending on ambient. night temp is about 79/80 so flux between night and day is about 6-15 degrees.


Too much heat and inadequate/improper ventilation. Your temps are way too high IMO. The bulb may be too close as well.

I don't do these micro grows so I'll be flamed for saying this. However, I believe it is hard to get adequate air exchange in some of these tiny grows. And when temps get like yours, it stresses plants. Plant photosynthesis and metabolism get out of whack. The plant has a tough time with nutes, on and on.

I would go very easy on the nutes while you solve your heat and ventilation problems.

Those would be my humble suggestions.

Toodles
:rasta:
 
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W

Wait...What?

Active member
Veteran
I find it difficult to swallow that 85-95f temps would bother a plant native to Thailand...

pic #1 is fertilizer burn. the crispy tips are a tell.
 
T

toodles

Wait...What? said:
I find it difficult to swallow that 85-95f temps would bother a plant native to Thailand...

pic #1 is fertilizer burn. the crispy tips are a tell.
Click to expand...

That's true. Low 90's doesn't harm native thai plants growing in their tropical environment. The inside of that lil box isn't exactly tropical. I've been to SE Asia. I know. :joint:

Toodles :rasta:
 
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