Disappointing harvest lol

[Orblight]

Little disappointed with this one 580g under 600w of qb led in a 5x5
The colas never formed togeather so just lots of small buds that feel dence but are heeps light.
Very little smell.
To many problems that I couldn't sort out so pulled early at 8 weeks flower
Had either light stress or nute burn looked like both. Mine you ec never went above 1.2 and the run off was the same.
3 x 200w sf lights at 18" from the tops. All leaves on the top almost ft of the plants had major tip burn and curled around like a joint.

 

[jondamon]

Little disappointed with this one 580g under 600w of qb led in a 5x5
The colas never formed togeather so just lots of small buds that feel dence but are heeps light.
Very little smell.
To many problems that I couldn't sort out so pulled early at 8 weeks flower
Had either light stress or nute burn looked like both. Mine you ec never went above 1.2 and the run off was the same.
3 x 200w sf lights at 18" from the tops. All leaves on the top almost ft of the plants had major tip burn and curled around like a joint.

Then you fucked up!

Keep plants healthy and then the rest will follow.


How tall were your plants?

What footprint were you using for the 3x200w lights?

 

[Wastei]

Lack of info to be able to help. But I can tell you that 18" sounds way to close in my book for any LED fixture. I think it's another case of blindly following manufacturers numbers and recommendations instead of monitoring the plants response and let them decide what you should do.

Let the plants grow in to the lights next time so they're better able to adapt. More is not better, adequate amount is. Every plant react differently to light so it's better to let them tell you what to do.

 

[Orblight]

Then you fucked up!

Keep plants healthy and then the rest will follow.


How tall were your plants?

What footprint were you using for the 3x200w lights?

Indeed I did i just couldn't figure it out or move lights any higher.
Plants where 3ft tall from the pot.
They where healthy as untill about 4th or 5th week of flower. I'm guessing the light got to them, cos I doubt I would get major nute burn well tip burn at 1.2 ec in coco but I could be wrong.
They where in a 5x5 tent

Lack of info to be able to help. But I can tell you that 18" sounds way to close in my book for any LED fixture. I think it's another case of blindly following manufacturers numbers and recommendations instead of monitoring the plants response and let them decide what you should do.

Let the plants grow in to the lights next time so they're better able to adapt. More is not better, adequate amount is. Every plant react differently to light so it's better to let them tell you what to do.

Yeah kinda but couldn't raise the lights any higher unfortunately. Manufacturer recommended 14 - 18" I think and online par tests of my light showed 15.5" as optimum but that was a single fixture in a 2x3 tent so the over lapping of multiple lights might have increased that.
What are the main signs if too much leaves curling up and tip burn?

 

[Wastei]

Indeed I did i just couldn't figure it out or move lights any higher.
Plants where 3ft tall from the pot.
They where healthy as untill about 4th or 5th week of flower. I'm guessing the light got to them, cos I doubt I would get major nute burn well tip burn at 1.2 ec in coco but I could be wrong.
They where in a 5x5 tent

Yeah kinda but couldn't raise the lights any higher unfortunately. Manufacturer recommended 14 - 18" I think and online par tests of my light showed 15.5" as optimum but that was a single fixture in a 2x3 tent so the over lapping of multiple lights might have increased that.
What are the main signs if too much leaves curling up and tip burn?

Are you able to dim the lights down? Forget about PAR testing before you have a stable environment. It's for recreating environmental values for a dialed in strain on a larger scale.

 

[Orblight]

Are you able to dim the lights down? Forget about PAR testing before you have a stable environment. It's for recreating environmental values for a dialed in strain on a larger scale.

Oh yeah they can be dimmed completely forgot about that. Would they still turn out of at lower levels? Most people on here say in a 5x5 tent you want about 800w worth of led.
Say if I lowered them down to 75% that would give me about 450w
But i guess if there getting light stress there getting g light stress and you need to either raise the lights or dim them if that was the problem. What sort of distance would you think to be more acceptable?

 

[Wastei]

Oh yeah they can be dimmed completely forgot about that. Would they still turn out of at lower levels? Most people on here say in a 5x5 tent you want about 800w worth of led.
Say if I lowered them down to 75% that would give me about 450w

Yeah you would be better of dimming down. 800w of LED is a lot of light. You could probably make that work but the ceiling height is going to be the main problem if you don't have a 240cm/7 feet 10.5 inches tall tent.

I had a hard time not burning my last run with 240cm 4x4 gorilla tent and 650w of LED. Ran them all the way at the top.

 

[Orblight]

240cm tall would help alot mines only 200cm and the hangers for the lights are including the yoyos would be approximately 30cm I reckon.

 

[jondamon]

3ft tall plants with the penetration power of a 200w is not conducive to big buds.

I use a screen and my plants are no more than 1.5-2ft above the screen utilising a 300w LED over them.

what were your feeding practices like in coco? (13 year coco grower here)

 

[Orblight]

3ft tall plants with the penetration power of a 200w is not conducive to big buds.

I use a screen and my plants are no more than 1.5-2ft above the screen utilising a 300w LED over them.

what were your feeding practices like in coco? (13 year coco grower here)

May have been the problem they where 3ft but atleast the bottom ft was trimmed bare. While I do like the idea of the screen I went with lst as I fell the screen would get in my way in a tent environment anyway.

I was feeding at lights on with a good amount of run off, Then again 6 hours later.

 

[Orblight]

Found a pic from maybe week 7, but doesn't do justice to how much tip burn there really was and along the margins that where burnt.
Also she was fading a bit here as u had dropped the nutes right back to I think 0.8 ec

 

[ProPheT 216]

So my first thought OP is you had way more than one thing going on. The plants are hot yes, but they are likely that hot and that deficent because they are not drinking water well. Maybe your ec, maybe ph. but the plant looks the same in lower spots as it does at the top. Lots of tip burn from to much N, looks like lockout of some sort.

 

[Orblight]

Sorry I forgot to add before that point that I dropped the ec back they weren't pale and yellow like that just the tip and margin burn as well and the curning leaves. They looked like that untill about half way down the plants, and the bottom half looked great no burn no curning nice green colour.
I dropped the ec back cos I knew I was just gonna call it quits at 8 weeks in and try again cos I couldn't fix it.

 

[jondamon]

Sorry I forgot to add before that point that I dropped the ec back they weren't pale and yellow like that just the tip and margin burn as well and the curning leaves. They looked like that untill about half way down the plants, and the bottom half looked great no burn no curning nice green colour.
I dropped the ec back cos I knew I was just gonna call it quits at 8 weeks in and try again cos I couldn't fix it.

Did you utilise any high P and K nutrients during the cycle?

 

[Roger A. Shrubber]

Found a pic from maybe week 7, but doesn't do justice to how much tip burn there really was and along the margins that where burnt.
Also she was fading a bit here as u had dropped the nutes right back to I think 0.8 ecView attachment 5162121

looks like P deficiency, wind burn, and overfeeding, but hard to actually be sure from one partial plant pic

 

[Rurumo]

I never saw were OP posted his temps and RH %? Looks like it got hot and possibly dry in there, in addition to the lights being too close. How many/what kind of fans did you have blowing in there? Next time I'd run the lights at 80% and start at 2 ft, then lower them little by little until you see light damage, then ease back.

 

[Orblight]

Did you utilise any high P and K nutrients during the cycle?

I used some h&g top shooter in the last 3 weeks but only at about quarter strength. Basicly my tap water is 0.4 ec, I would bring that up to 1.0 with the h&g base cocos then top it up to 1.2 with top shooter. The reason I only feed at 1.2 was early in flower I tried to go a lottle higher and got slight nuts burn so I backd off and it stopped untill the last half of flower when everything went to shot lol.

I never saw were OP posted his temps and RH %? Looks like it got hot and possibly dry in there, in addition to the lights being too close. How many/what kind of fans did you have blowing in there? Next time I'd run the lights at 80% and start at 2 ft, then lower them little by little until you see light damage, then ease back.

Rh was at 60% the whole time night temps where around 16c and day temps where 25c.
I had a 30 or 40cm Ped fan in the corner blowing over the plants might have been too much.
I will try that next time

 

[jondamon]

I used some h&g top shooter in the last 3 weeks but only at about quarter strength. Basicly my tap water is 0.4 ec, I would bring that up to 1.0 with the h&g base cocos then top it up to 1.2 with top shooter. The reason I only feed at 1.2 was early in flower I tried to go a lottle higher and got slight nuts burn so I backd off and it stopped untill the last half of flower when everything went to shot lol.

Rh was at 60% the whole time night temps where around 16c and day temps where 25c.
I had a 30 or 40cm Ped fan in the corner blowing over the plants might have been too much.
I will try that next time

I utilise 0.6-1.4EC myself feeding between 1x-5x a day depending on pot size and plant size etc.

 

[Orblight]

I utilise 0.6-1.4EC myself feeding between 1x-5x a day depending on pot size and plant size etc.

Glad to know I'm not the only one, couple people I know where telling me I need to go atleast 1.8 probably more like over 2 but I kept saying no these ones just won't handle that high.

 

[medidedicated]

Lack of info to be able to help. But I can tell you that 18" sounds way to close in my book for any LED fixture. I think it's another case of blindly following manufacturers numbers and recommendations instead of monitoring the plants response and let them decide what you should do.

Let the plants grow in to the lights next time so they're better able to adapt. More is not better, adequate amount is. Every plant react differently to light so it's better to let them tell you what to do.

New to LEDs and have this same issue, mfg recommendations were never met yet. Pointing fan upwards towards light seemed to help but still havent lowered past 24” yet, and it says 14-16” veg.

That comment helped, I felt most would go lower. Cheap but decent light though. Two strains, the other seems hungrier for light, so strains can differ?

Thats why I am trying to keep canopies with their own strain. Thought this was relevent to your thread.

Wow 580G isn’t bad if it did not take longer than 4 months IMO. Sorry about the light buds, my first outdoor was like that.

My plants have been thriving with the fan pointing at light, growing 11 tip leaves. I am a newbie but there are my two cents, they bleached and showed what you described before. Big open space helps too?



@Orblight