wierd brown dots on leaves, is it nute burn?

Hey all,

I have two plants showing weird symptoms. Took the best pics i could.

Is this nute burn? Only like two or three out of the six are affected it seems

I gave them Water + TigerBloom + BigBloom (all at half doses) last week thursday (7/10), and than Water + open sesame on Sunday (7/13).

They are about 2 weeks into flowering.

Any ideas? And what to do?

here are the stats

How long has this problem been going on?1-2 days
What STRAIN are you growing? seems to be affecting only the purple kush. also growing FLO and white rhino
What was the establishing technique? (seed or clone?) clone
What is the age of your plants? 2 weeks into flowering
How long have they been in the soil mixture they are in now? 2 weeks. transplanted into 3gallon FFOF
Were they in the same mixture when they were seedlings/smaller plant? If not, what mixture were they in before? probably not the same. not 100% what it was in before
How Tall are the plants? 16-20 inches
What PHASE (seedling, vegetative or flower) are the plants in? flower
What Technique are you using? (SOG, SCROG etc) nothing fancy going on here
What size pots are you using? (Include how many subjects to pot) 6 plants in 3 gallons
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?) FFOF
What brand Nutrient's are you using? FF produts - Tigerbloom, Big Bloom, and Open Sesame have been fed to them so far
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful* 50% doses every other watering
How often are you feeding? every other watering
If flowering, when did you switch over to using Bloom nutrients? 2nd watering of 12/12
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect) no particular order
What is the TDS/EC/PPM of your nutrients used? do not know
What is the pH of the "RUN-OFF"? checked this this morning, saw a pH of 4.9-5.1 in the run off
How often are you testing pH/ppm/EC/TDS? I test pH in the watering can every time pre/post nutes. Dont do anything else
What method of pH test was administered? Using Strips? pH pen? pH pen
How often are you watering? every other day to every 2-3 days
When was your last feeding and how often are you feeding? last feeding was on 06/10 and i feed every other day
What size bulb are you using? 600w HPS
How old is your bulbs? 1 month old
What is the distance to the canopy? 12-16 inches
What is your RH Factor? (Relative Humidity) stays at 50% consistent, and hits 60% after a watering/neem spray
What is the canopy temperature? 77-80
What is the Day/Night Temp? (Include fluctuation range) day average is 78-81. night is 72-74
What is the current Air Flow? (cfm etc.)hydrofarm 6in duct fan for intake @ 188CFM and a hydrofarm inline 4in exhaust fan @ 165CFM and a vertical fan blowing wind on the plants
Tell us about your ventilation, intake exhaust and when its running and not running ? exhaust runs then the lights are on. intake is on for 15min every hour
Is the fan blowing directly at plants? a vertical fan is
Is the grow substrate constantly wet or moist? id say moist
Is your water HARD or SOFT? do not know
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? tap
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?(Only if you have a tds pen) no pen
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?(Only if you have a tds pen)
Are you using water from a water softener? dont know
Has plant been recently pruned, cloned or pinched? mp
Have any pest chemicals been used? If so what and when? pyrethrum
Are plant's infected with pest's? were once hit with mites

Should also mention these are all indoor girls under a 600w.

Temps 78-80 humidty at 50.

Strange as it is to suggest, it looks like ozone generator damage. If you have an ozone generator, put it on a timer at about 1/4 that its at now. If you dont have one, your guess is good as mine since you've given us no information about ppm, ph, etc... So........

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When you do post please give as much detailed information as possible to faster get your diagnosis.

Questions provided by CannaGod from PLanetGanja and 10K from ICMAG

*NOTE: Please Cut And Paste only the section that applies and add your response. The more information you can give the better and faster people can help you out.Pictures should be added to every thread to ensure a proper diagnosis, when using pictures please ensure your HPS if using one is not turned on while taking pictures, as the lighting hides the plants problems. Fill out

ARE YOU USING?

SOIL:


How long has this problem been going on?
What STRAIN are you growing?
What was the establishing technique? (seed or clone?)
What is the age of your plants?
How long have they been in the soil mixture they are in now?
Were they in the same mixture when they were seedlings/smaller plant? If not, what mixture were they in before?
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 brand Nutrient's are you using?
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding?
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM of your nutrients used?
What is the pH of the "RUN-OFF"?
How often are you testing pH/ppm/EC/TDS?
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?
How old is your bulbs?
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.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
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?
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?(Only if you have a tds pen)
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?(Only if you have a tds pen)
Are you using water from a water softener?
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/Coco/Soiless/

How long has this problem been going on?
Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents)
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 long have they been in there mixture they are in now?(coco,soiless etc..)
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?(If growing soiless)
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
How often are you feeding? (If using soiless)
How often are you giving nutrients? (If using soiless)
If flowering, when did you switch over to using Bloom nutrients?
What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
What is the TDS/EC/PPM you are using
What is the pH of the "Tank"?
How often are you testing your pH/PPM/EC/TDS?
Are you sure your calibration is correct on your equipment?
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?
How old is the bulbs you are 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.)
Tell us about your ventilation, intake exhaust and when its running and not running ?
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?
If using tap water, what is the ppm/EC/TDS of the water right out of the tap?
If using RO,Distilled,mineral water, what is the ppm/EC/TDS without any additives?
Are you using water from a water softener?
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
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Fill in the blanks and get back to us!

The pattern of spots, suggests to me that there is a nutritional deficiency rather than some type of toxicity.
I would not be surprised if your plants are deficient in one or more of the trace elements. I would suggest that you
go to foliar feeding for a while. It is the quickest and safest way to treat a sick plant. Some would say that nutrients
sprayed on the leaves during the flowering stage might result in a bad taste, later on. I have never experienced any
bad taste from foliar spraying but perhaps they have more sophisticated taste buds than I do.

i will report back tomorow with that list filled out as best i can. thanks all.

Hey Research Kitty, i had a chance to fill it out this morning.

Thanks for all the help!

Sigh, my outdoor girls are doing so well. my indoors are sad

are you using tap water? tap water is floridated in most of the civilized US. not only that, instead of chlorinating the water, they are using chloramine. i have only seen this problem on my outdoor plants that get fed with the hose and only really once they get transplanted into their final resting place. prior to that as clones or pre-veg plants they are fed with a nutrient bath made with cleaned water.

just my thoughts...

Thanks for filling out my form. Based on the answers you supplied, I think the deficiency is within your tap water or ppm. Tap water's ppm varies everywhere. As an example, in California it can be upwards of 400-600ppm. On the east coast in the mountains you can get it as low as 25-50ppm. Its a huge difference! My suggestion to fix the problem: You need a ppm meter to get the proper readings. Otherwise you never know if your burning your plants or not until its too late. A ppm meter is only $40-$50 for a cheapo one, and around $150 for a ppm/ph/temperature combo meter that monitors it continuously. Without a ppm meter, its basically being a marathon runner thats barefoot. Your feet feel fine at first but then start to show signs of hurting the more you run. Everything else in your growing environment and practice appears perfectly fine, except not having the correct instrument to measure ppm. Hope this helps! Your problem is easy to reverse, its certainly not too late to get it fixed before it harms your results.

Someone here suggested a foliar spray -- Under all circumstances do NOT heed that persons advice. They didnt read where you're already in the 2nd week of flowering, and spraying water on the plants will increase your chances of destroying the nugs, burning the nugs/leaves by the lights heating the water you spray, and increases your chance for mold tenfold. Foliar spray is for vegitative growth and the first week of flowering at a max.

thanks kitty.

going to pick up a PPM meter when i can this week. Any idea what i should be shooting for PRE/POST nute adding? Also picked up a bottle of AN Revive, but will not start using it until i see run off water at around 6.5