Deficiency

[Norkali]

SOIL:

How long has this problem been going on? Just about a week now
What STRAIN are you growing? Schrom (Romulan x 1973 Columbian Gold)
What was the establishing technique? (seed or clone?) Clone
What is the age of your plants? 3-4 months
How long have they been in the soil mixture they are in now? 3-4 weeks
How Tall are the plants? ~4 ft.
What PHASE (seedling, vegetative or flower) are the plants in? Veg
What Technique are you using? (SOG, SCROG etc) None
What size pots are you using? 3 gallon smart pot
What substrate/medium are you using? What brand of soil mixture are you using? Fox Farms Ocean Forest with Perlite added
What Nutrient's are you using? Motherplant nutrients <-link
How much of each nutrient are you using with how much water? 2 tbsp./gallon
How often are you feeding? Every watering
What method of pH test was administered? pH pen (just re-calibrated, was very close to spec - so pH was 'on-point' @ 6.5-6.6 feedings)
How often are you watering? About every 3 days
When was your last feeding and how often are you feeding? 2 tbsp Motherplant parts A&B two days ago, along with Pyganic @ 20ml/gallon
What size bulb are you using? 600w
What is the distance to the canopy? 1.5-2 ft.
What is your RH Factor? (Relative Humidity) 50-60%
What is the canopy temperature? ~76
What is the Day/Night Temp? (Include fluctuation range) 76-70
What is the current Air Flow? (cfm etc.) air is exchanged about once every 3-4 minutes
Tell us about your ventilation, intake exhaust and when its running and not running? Passive intake (open door) and a 6'' inline out the room
Is the fan blowing directly at plants? no
Is the grow substrate constantly wet or moist? no
Is your water HARD or SOFT? RO, with a tsp. of Cal-Mag added to every gallon
What water are you using? Reverse Osmosis w/ cal-mag @ 1 tsp/gallon
Has plant been recently pruned, cloned or pinched? No
Have any pest chemicals been used? If so what and when? Pyganic, 40ml/gallon a week ago and again @ 20ml/gallon two days ago.
Are plant's infected with pest's? Were infested with Root aphids, I think I have them eliminated now though.

Notice that the effected leaves are the ones closest to the light, I only see the deficiency in the 'closer' leaves; I already moved the plants away from the light a little last night, we'll see if it helps. To clarify, the top new growth looks just fine, it is the leaves that are physically closest to the light, 3-5 internodes down from the top.

 

[joe fresh]

i would say add some cal/mg to it, it def looks deficient in cal/mg from what i can see, heres a link scroll down to where it says magneisium, look at the pic, your leaves in the background look like those
http://www.420magazine.com/forums/p...abis-plant-pest-problem-solver-pictorial.html

 

[MickTheBrag]

whenever your not sure and cant make up your mind whats wrong. a good flush will help the problem.


flush the plant with PH'd water

 

[Norkali]

Thank-you joe! I believe that you are indeed right...time to up the Cal-Mag a little I guess.

 

[chemman14]

are your stems/stalks weak? my buddy had a cal/mag deficiency and the stems and stalk of the plant were weak

 

[darwinsbulldog]

yeah micks right, i'd make sure the pH is where it's meant to be with respect to whatever medium you're running in order to make sure it's not lock out, because if it is then adding more cal/mg etc won't do much. so if you find the pH is way too high or too low, you might not need to flush it just add ph up or down to get it into the right range and then give it your cal/mg, but if the ph is in the right range and it's still occurring probs best to flush it out with ph water, make sure ph is stable then add cal/mg, hope that helps and good luck mate! post your picks when you fix it

 

[bombadil.360]

imo, you are adding too much fertilizer... from the link to your nutrients, it says:

"Mix 3 to 4 teaspoons of Part A and 3 to 4 teaspoons of Part B per gallon of water."

you said you are adding 2 tablespoons per gallon of water... a tablespoon is way bigger than a teaspoon.

also, you should not even be adding the recommended dose of teaspoons but less.

I would not flush though, I would just lay-off the nutes for a few waterings and see how it goes.

good luck!

 

[Norkali]

imo, you are adding too much fertilizer... from the link to your nutrients, it says:

"Mix 3 to 4 teaspoons of Part A and 3 to 4 teaspoons of Part B per gallon of water."

you said you are adding 2 tablespoons per gallon of water... a tablespoon is way bigger than a teaspoon.

also, you should not even be adding the recommended dose of teaspoons but less.

I would not flush though, I would just lay-off the nutes for a few waterings and see how it goes.

good luck!

Eagle eyes! I love it when people catch that kind of stuff....I meant 2 tsp./gallon - thank you. Indeed, the ladies would have probably been fried.

I upped the nutrients to the recommended dosage - 3 tsp/gallon. Also upped the Cal-Mag to 1.5 tsp./gallon from 1 tsp./gallon.....

They are happy now!!!

​

Thank-you guys....

 

[joe fresh]

GJ man, happy your plant is doing much better

 

[chemman14]

looking good