brown spots durring flower??

[GreenBush 420]

Does anyone know what this deficiency is for sure? Is it Boron? Maybe Cal or Mg? It just started showing in the last few days. Sorry for the picture. These aren't my plants, I'm posting for my cousin.


Thanks guys!

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brown_spots

 

[Dr. G]

ph is off andit looks like maby the water temp is toohigh or not enough oxygen

correct ph your plantswill recover but it looks liek a mg problem

fill out the ? air or your not going to get much responces

 

[GreenBush 420]

Wrong picture!!!!!! Those are old....although the spots do look like the same problem?
Please see this pic below.....

 

[GreenBush 420]

sorry, about the lack of info, again not my plants. He is growing in straight coco using BC nutes. 3 plants under one 1500w MH (biggest friggin' thing I've ever seen) LOL He just switched to the metal halide from a 400w HPS. Don't ask me why, I guess because it was free and he thinks bigger is better. I told him to at least throw them under both types while they bud...

 

[Dr. G]

sry then you cant be helped

tellhim to get his ph in the correct levels thatl prolly solve hisproblems

get his water temps to correct level

get enough air in the water

 

[MynameStitch]

You need to go back and have him fill out this information if he wants his plants to be fully fixed, I think it may be a pH related issue, but it also may be a calcium deficiency. Is he using RO water? Is he using cal mag?

We don't know if you are using hydro or soil......

SOIL:
What STRAIN are you growing?
What was the establishing technique? (seed or clone?)
What is the age of your plants?
How Tall are the 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? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
What Nutrient's are you using?How much of each with how much water? How Often? *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? Using Strips? pH pen?
How often are you watering?
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?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
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?


HYDROPONICS/Aero Ponics

What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...)
What STRAIN are you growing?
What was the establishing technique? (Were the seed or clone?)
What is the age of your plants?
How tall are the plants?
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in?
What Technique are you using?
What substrate/medium are you using?(Hydroton, RockWool etc.)
What is the Water temperature?
What color are your roots? White? Brown? Are your roots slimy?
What Nutrient's are you using? How much of each if using multiple?
What is the TDS/EC/PPM you are using?
What is the pH of the "Tank"?
Are you sure your calibration is correct on your equiptment?
When was your last watering?
What is your water temps?
When was your last feeding change? (ie. grow-bloom-micro-additional)
How often do you clean your system: example: Flush out water replace with clean water and nutrients?
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 flucutaion range)
What is the current Air Flow? (cfm etc.)
Is the fan blowing directly at plants?
Is your water HARD or SOFT?
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
Has plant been recently pruned, cloned off of or pinched
Have any pest chemicals been used? If so, What and When?
Are plant's infected with pest's