Burn?

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protonmail88

New Member
Hello,
New in this forum. First grow, amnesia, fast bud and Barney’s plants.
had some issue I thinks with water dosage.
the plants are 7/8 weeks old, the top buds burn and leaves starting yellowing as per below picture.
the grow room is little bit small and touched the led light.
full led light 200w + hps 400w.
led All day , hps during the night 9 hours.
maybe humidity too high? I have around 60%.
I’ve stopped also with nutrients from some days. Usually used plagron alga bloom and green sensations.
thanks all

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protonmail88

New Member
thanks all for the replies!
what do you think of buds dimensions? since I want restart, can you give me your opinion if the buds looks ok with size of 7/8 weeks old plant?
do you add nutrients on each of your feed of just 2 times a week?
about defoliage, with autos, do you think is ok to do it often? i read that is a big stress but worried that the lower buds doesent take the light. usually when i do defoliage of bigger leaf, after 1 week i see many new ones.
for sure I will buy a higher grow box.
about the light, i use full day the led 200w and hps 400w just 5 hours per day. grow box dimension 80x80x170cm
cheers
 
Last edited:
J

JK-DOOR 420

Active Member
Nothing about those plants look good. No offence, but the size and everything else is terrible. Learn from your mistakes n start over.
 
VincenzioVonHook

VincenzioVonHook

Well-Known Member
For a starter, you don't need 600w in an 2.6x2.6. the 200w led would be fine. That is 30w/ft² by itself. There's no need to throw that type of light at autos, ever.

650umol over 18 hours is a DLI of 42. You would be running a DLI in the hundreds with the amount of light you are throwing at them. I can get that type of intensity from a single 150w quantum board at 24" in an 80x80.
 
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protonmail88

New Member
thank all for the replys.
I will start over with new plants, just led light 18 hours per day and taller grow box.
in case for a 80x80 box, is better a 200w or 400w hps?
in the final stage is better to use led or hps light?
bye
 
VincenzioVonHook

VincenzioVonHook

Well-Known Member
protonmail88 said:
thank all for the replys.
I will start over with new plants, just led light 18 hours per day and taller grow box.
in case for a 80x80 box, is better a 200w or 400w hps?
in the final stage is better to use led or hps light?
bye
Click to expand...
Just use the LED. There's no point in burning twice the power and heat for no reason when your already able to run 18 hours a day with autos (unless it's cold where you are). In general you will get around 0.8-1g for watt with HID and 1.5-1.8g per watt with LED. You will be providing more than enough light with the LED you have.

The only reason you need more intensity in flower with photoperiods is because you drop the lighting to 12 hours, drastically reducing DLI and creating a need for far more intensity to make up for the shorter days..

Something to keep in mind as well, the stretch was probably due to heat issues not lack of light. Plants will stretch if heat is an issue as well.
 
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protonmail88

New Member
Regarding defoliation, how many times you can do it on autos?
It’s helpful in order to get the light in the middle of the plant and increase the buds dimensions ?
Or just create stress ti the plant ?
 
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