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Potassium/Mg Lockout?

MynameStitch

Dr. Doolittle
Mentor
Veteran
OOO!! love the avatar! Kimari Ronso....... HORNLESS HORNLESS!!!! lolol

Only FF players would know what I am talking about :D
Anyways......


Looks like potassium; magneisum does not start on the leaves edges.... starts on intervenial .. in between veins causing yellowing, but the veins stay green....

Can you answer more questions about your growing conditions to find out why you are having this issue?

SOIL:
What STRAIN are you growing?
What was the establishing technique? (seed or clone?)
What is the age of your plants?
What PHASE (seedling, vegetative or flower) are the plants in?
What Technique are you using? (SOG, SCROG etc)
What size pots are you using? (Include how many subjects to pot)
What substrate/medium are you using? (percentage of perlite, vermiculite...etc?)
What Nutrient's are you using?How much of each? *Knowing the brand is very helpful*
What is the TDS/EC/PPM of your nutrients used?
What is the pH of the "RUN-OFF"?
What method of pH test was administered?
When was your last water?
When was your last feeding and how often are you feeding?
What size bulb are you using?
What is the distance to the canopy?
What is your RH Factor? (Relative Humidity)
What is the canopy temperature?
What is the Day/Night Temp? (Include fluctuation range)
What is the current Air Flow? (cfm etc.)
Is the fan blowing directly at plants?
Is the grow substrate constantly wet or moist?
Is your water HARD or SOFT?
Has plant been recently pruned, cloned or pinched?
Have any pest chemicals been used? If so what and when?
Are plant's infected with pest's?
 
Last edited:

Vash

Ol' Skool
ICMag Donor
Veteran
SOIL:
What STRAIN are you growing?.....BB,F13,SD IBL
What was the establishing technique? (seed or clone?)Seed
What is the age of your plants? Day 66 of Veg
What PHASE (seedling, vegetative or flower) are the plants in? VegWhat Technique are you using? (SOG, SCROG etc) Regular
What size pots are you using? 3 Gal - 1 plant per pot
What substrate/medium are you using? FFOF,topsoil, 50/50 perlite/verm, crushed oyster shells, coffee grounds,EWC
What Nutrient's are you using?How much of each? *Knowing the brand is very helpful*- bone meal, blood meal,kelp meal, steamed bonemeal(50/50 blend w/bone meal, some all purpose 5-5-5 - all 1 tsp per gal - mostly Peace of Mind and Down to Earth products
What is the TDS/EC/PPM of your nutrients used? No clue
What is the pH of the "RUN-OFF"? No clue. Havent tested PH
What method of pH test was administered? N/A - will be PH soil tester when equipment arrives
When was your last water? Yesterday
When was your last feeding and how often are you feeding? last week, and once every 10 days.
What size bulb are you using? 400mh
What is the distance to the canopy? 8 inches
What is your RH Factor? (Relative Humidity) 35-45%
What is the canopy temperature? 80 degrees
What is the Day/Night Temp? 68 - 80 degrees
What is the current Air Flow? Don't know , but substantial
Is the fan blowing directly at plants? No
Is the grow substrate constantly wet or moist?No
Is your water HARD or SOFT? Rainwater
Has plant been recently pruned, cloned or pinched? No
Have any pest chemicals been used? If so what and when? NOAre plant's infected with pest's? NO
Today 04:53 PM

Thanks for the prompt response, Stitch. :yes:

And no, I'm not an FF player. :redface:
 

MynameStitch

Dr. Doolittle
Mentor
Veteran
Your ph may be acidic, you need to test your ph. Coffee grounds are acidic and can bring your ph down lowwwwww!

You first need to get your ph test strips or get a meter, water your plants and collect the run off and test it after 1 min.
you need to feed them plants every 7 days, they are going to long in between feedings.

When you mix your tea; do you let it sit for a bit before using it?
I would get something with bigger in potassium; yours does not have enough potassium but good levels of N, P and micro nutrients.
 

Vash

Ol' Skool
ICMag Donor
Veteran
I bubble my teas for 24 hours at least. I'll be taking the PH as soon as the equipment gets here. Thanks for the diagnosis, Stitch.
 

Vash

Ol' Skool
ICMag Donor
Veteran
Stitch, I took the pH, and it was right on the money 6.6-6.8. I then took your advice with the teas and increased my K. Things seem to be moving right along now, and growth seems to have begun again. I do know for sure that there's proper turgor pressure in the leaves as they are nice and green with that "shine" as I call it, and at the usual 45 degree angle. No more yellowing of the leaves on the new growth. Thanks again, Doc Stitch :yes:
 

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