Nute Def? Heat Stress? Please Help! ton of pics

[bobojones]

Ok, that helps a bit. I want you to check out the pics on my recent post. Click them again after they load for the full size...THIS is nute burn, and Iâ??ve never seen it like thisâ?¦

http://boards.cannabis.com/plant-pro...-pleasure.html

You MAY have nute burn that is just now showing up, and in those areas because the nutrients exchange fastest under the light where photosynthesis takes place, but, your pics look like my plants did when the canopy was 80-90 degrees during light time and I didnâ??t water enough.

bobojones Reviewed by bobojones on 03-23-2010. Nute Def? Heat Stress? Please Help! ton of pics Hi all, Well I've done the majority of my research here for my first grow and would like to thank all that contribute! I started with 8 hybrids (white widow, and pure power plant) and 1 indica (blue hash) and they've done extremely well but I'm noticing what looks like some sort of deficiency maybe... They are 85 days from seed and have been flowering for 33 days now. Now for their environment: homemade 3' x 4' area covered with panda film, Rating: 5

[wickywackyworld]

well they do look very similar, if no one else changes my mind, imma go with a 1-1 ratio water-potsize, and do a semi-flush so thats gonna be 3 gallons of water per pot, ewwww 30 gallons of water, thats gonna be fun lol, but better than losing yield. if anyone has a solution besides flushing let me know and save me a lot of time and effort. thanks bobo

[wickywackyworld]

oops i mistyped in the above questionnaire

What is ph of the RUNOFF? 6.4-6.5***

[wickywackyworld]

i may have found my problem.... ph pen was way off and wouldnt calibrate correctly. i went and got a new one so we'll see

[busybee]

and plus,if it was light burn,the buds would have been burnt also,not just the leaves!

[martyrprojekt]

I disagree with everyone else.

In your pictures there are no signs of nute burn. This is not nute burn. Nute burn affects all of the major leaves, not just the leaves in direct exposure to the light. Move your lights up and increase your circulation! You have light burn, period. This can be compounded by under-watering. Check your soil and water only when the pot is light in weight. If the soil sticks to your finger, it's wet. If not, water until 20% of the total water drains out of the bottom of the pot and check every 2-3 days.

I beg to differ sir. If it was light issues we would be seeing the buds and the leaves surrounding the buds with the majority of the damage, since they are closer to the lights than the leaves (in most cases). In most cases I would agree with you...but, the pictures say a completely different story.

Nutrient application is not being done with every feeding either. Sporadic usage of nutrients, feeding inconsistencies, etc....all lead to nute burn because it is being hammered with nutes once...the plants never truly get the benefits...

I can understand how you feel this would be lights (but...it is the lights burning the leaves due to nutrient overload).:thumbsup:

[palerider7777]

i was going to say if it was'nt nute burn it was prob heat not light burn lmao"light burn"roflmao.but you said they were 24inches from tops of plants which is plenty of room unless you don't have any fans in the room or venting out of the room.

[wickywackyworld]

I beg to differ sir. If it was light issues we would be seeing the buds and the leaves surrounding the buds with the majority of the damage, since they are closer to the lights than the leaves (in most cases). In most cases I would agree with you...but, the pictures say a completely different story.

Nutrient application is not being done with every feeding either. Sporadic usage of nutrients, feeding inconsistencies, etc....all lead to nute burn because it is being hammered with nutes once...the plants never truly get the benefits...

I can understand how you feel this would be lights (but...it is the lights burning the leaves due to nutrient overload).:thumbsup:

-----that sounds like the best advice i've heard so far, thanks marty. i believe my semi flush should help out. after i flush, should i wait until next watering to add nutes/ferts or should i add a mild solution to prevent deficiencies?

i was going to say if it was'nt nute burn it was prob heat not light burn lmao"light burn"roflmao.but you said they were 24inches from tops of plants which is plenty of room unless you don't have any fans in the room or venting out of the room.

oh yeh its at 18-20 inches and its air cooled, along with a ton of ventilation across the canopy, i've lowered my canopy temps to 77 and it controlled so i was really thinking heat stress was silly, i thought perhaps too much light but that didnt sound right either. i really hope my semi flush helps out, ive got my fingers crossed. thanks guys

[wickywackyworld]

Alrighty guys, today I watered and hopefully this will give us an idea of whats goin on.
My input water was a mild solution of advanced nutrients ferts and my input TDS measured at 500 ppm and my input ph was 6.6. My runoff measured in at 1700+ and ph of 6.4-6.5... Is it safe to assume that I've got nute burn? and can nute burn be responsible for deficiencies? After checkin my runoff and seeing it that high I semi flushed each 3 gallon pot with a gallon of water only with h202 added to help prevent oxygen deprevation. After semi-flushing my runoff's ph still measured at about 6.5 but my ppm was dropped to 900-1100 depending on which pot. I feel like I'm on the track to recovery but I would like to hear what the experts have to say given the new information? and do you guys think I should begin adding nute/ferts again next watering or do another straight watering?

Thanks guys for all your input and my ladies appreciate it too!

[Vancefish]

Is it safe to assume that I've got nute burn? and can nute burn be responsible for deficiencies?

It's called nutrient lockout. So, yes over nuting can cause lockout leading to deficiencies! :thumbsup: