Burn?

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

Wow. That's too bad. Yes they're burnt to a crisp.

Been away from home some days … the plant will recover a little bit?

You should throw them away and start over

protonmail88 said:

Been away from home some days … the plant will recover a little bit?

Click to expand...

SORRY NO
Welcome to RIU

Herb & Suds said:

You should throw them away and start over

Click to expand...

The burn buds or the complete plant ?

protonmail88 said:

The burn buds or the complete plant ?

Click to expand...

Everything

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

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

Hid is burning 5 hrs a day?

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.

protonmail88 said:

led All day , hps during the night 9 hours.

Click to expand...

Eh?

budman111 said:

Eh?

Click to expand...

I'm still trying to figure it out myself.

I've never seen a plant praying and burnt that much. Weird.

lusidghost said:

I've never seen a plant praying and burnt that much. Weird.

Click to expand...

I usually notice extreme praying when light stress is the culprit. Helped out a few people trying to run 400/600w hid in 2x2 tents, and all of them had basically vertical, toasted leaves.

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

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.

Light/Heat Burn, just need to raise lights higher away if possible and increase ventilation.

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 ?

Would love to now what the temps are in that hot box. Sauna hot I bet