Everytime I got into flower this happends!!!

[Guest]

Ive been growing the same clone in coco and terraponics soilless...veg is fine the first week of 12/12 is fine but when they start to strech the def...heres a pic of my leafs...it mostly shows up on the large fan leaves (sun leaves)
im going back to Ocean Forest next grow but im still curious if this is Phospurus def like stiches guide shows.. anyways thanks for you input..

Hydroponic or soil? Soilless
If soil, what is the composition? N/A
From seed or clone? Clone
Age of plant in question? 4 weeks 12/12 (9 weeks from roots)
What stage (Veg/Flower; how many days into)? Flower Day 30
Medium (Soil, Rockwool, Hydroton etc.)? Coco/ Supermatural Terraponic
Container/Pot size? 2 gal
Have they been transplanted, if so how long ago? 30 days ago
If soil, composition ratios (peat moss, perilite, vermiculite etc.)? COCO straight/ Terraponic From bag
Water runoff Ph? 5.8-6.1
Nutrients added? Be specific as possible. Terraponics Terra bloom Bloom
Ratios of nutrients (N% P% K%)? 11-31-15
Feeding schedule? one flood a day 800-1200 ppm
When were they last fed/watered? everyday
How are you determining when to feed/water (weight, wilting, etc.)? timer
TDS/EC/PPM? 1000ppm
Tap/RO/Distilled water? TAP
Ph before and after adding nutrients? 150ppm
Is your Ph equipment properly calibrated? yes
Light intensity/Age of bulb/Wattage? 1000w HPS hortilux
Distance to the canopy? foot- 2 foot
Temps at canopy? 75
Temps at root zone or reservoir? 70
Day/Night temps (Min.-Max.)? 65-70
Current air flow (CFM)? 700 CFM
Is there air blowing directly onto plant? yes
Using CO2? yes
Relative humidity? 50-60%
Growing technique (Scrog, Sog, Supercropping etc.)? Topping
Has plant recently been pruned, clones taken, fimmed or pinched? no
Pests? no
Chemicals used to irradicate? none
If so,When? none

 

[Guest]

stiches picture

 

[bergerbuddy]

Looks like a POTASSIUM def.. not Phos..
Also I would say you POT numbers are kinda low compared to your nitrogen and phosphorus.
I assume those are the numbers of the fert u are using... I would only suggest that around 3wks start adding a bloom booster that has high potassium

Peace
BB

 

[Core]

this is a guess on my part but to me it seems like a potassium problem

 

[Brother_Monk]

Hmmmm....seems more like they are using up stored N from the fans. Usually with a phosphorus def, the edges just get brown and krinkly. You have yellowing between the veins. Some strains will use up the larger fans as fuel during flower. Maybe you just have a N hungry strain. Did this start from the bottom and work it's way up? Is it vigorously using up the fans? I'm not familiar with coco...so maybe someone with that experience will chime in.

 

[Grat3fulh3ad]

K and Mg look to be deficient, to me, more Mg than K.

Mg deficiencies show Interveinal chlorosis on older leaves. Symptoms of Mg deficiency occur first on the lower leaves. There is chlorosis of tissue between the veins, which remain green, and starting from the tips the blades die and usually curl upward, a sure indication of Mg deficiency is that a good portion of the leaf blades die and curl.

 

[mig]

i as well believe it to be a K def. With a nitrgoen def the overall plant would be lighter green and wilted looking. K results in a browning of the edges which spreads into the entire leaflet. Do the affected leaves fall off rather easily without much pull?...this is a sign of K def. what was your pH as well? should be around 6 i have found. hope this helps...

 

[bergerbuddy]

Here is a GREAT link for coco growers.... it has a pictures there to compare to your def.. Its a Potassium def!!

http://www.canna.nl/english/index1.html

Go to growinfo then info sheets then pot def.

Peace
BB

 

[Core]

yea got one 2.....pretty good link...

http://www.marijuana-seeds.net/Thanks-ThankYou.htm

 

[Guest]

the leaves never curl up...

do i just need to feed veg nutes in the first weeks of flower along with my flower nutes to fix this? like I said im going back to foxfarm ocean forest which never gave me problems....its this whole soilless thing that keeps me guessing

 

[Guest]

i hope I was clean about the part of this def...it starts in the second week of 12/12 and stops about the third....it leaves the damage but dosent continue to damage...

 

[Grat3fulh3ad]

No, it's more Mg than K... If it was just a K deficiency there would be necrotic spots on the leaves... Interveineal Chlorosis and curled up brown tips is indicative of Mg....

 

[bergerbuddy]

Your flower nutes should have enuff Pot the THIRD number in the N-P-K ratio... to handle flowering...IMO!!

However I would add a small amount of a bloom booster that has some K in it also!!

Peace
BB

 

[Grat3fulh3ad]

right... it occurs during stretch, and the growing tips are lighter green at the same time?

 

[bergerbuddy]

No, it's more Mg than K... If it was just a K deficiency there would be necrotic spots on the leaves... Interveineal Chlorosis and curled up brown tips is indicative of Mg....

Actually Bro.. its just the opposite... you will usually see a calcium def when a MAG def is occuring... the cal def. is what causes the brown nerotic spots..

Peace
BB

 

[Grat3fulh3ad]

Oh... I was looking at stitches picture as well, thinking it was also yours... but it is much later in flower thatn you are talking

 

[Guest]

hmmm im starting to see the Potassium def...intresting

 

[Grat3fulh3ad]

K deficiencies cause necrotic spots on the leaves...

Ca, being an immobile element shows up on new growth, not old growth...

 

[Guest]

heres a pic 2 days ago

 

[Grat3fulh3ad]

ignoring Stitch's pic which I thought was yours too... A little more K is needed for sure... I'm gonna stick with a low Mg diagnoses as well, I do see leaves curling up...