• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

pistils turning brown 3 weeks into flower

W

Wackgrower

Member
Hey so im 2 and a half weeks into flower and the pistils on my plants are turning brown. These are the conditions currently
4x2 tent
48% humidity 75 degrees
Grow light science grow 300 321w light 12 inches above canopy about 60% power
I'm growing in coco coir using camg+, pure blend pro bloom, and liquid bone meal.
If you need any other info please let me know.20220109_105327.jpg20220109_105333.jpg20220109_105427.jpg
 
W

Wackgrower

Member
Ok I will ditch the bone meal. And I'm still having browning problems on my other plant that's about 8 inches shorter than the tall plant. Any idea about how far my light should be placed away from the canopy?
 
xtsho

xtsho

Well-Known Member
Wackgrower said:
Ok I will ditch the bone meal. And I'm still having browning problems on my other plant that's about 8 inches shorter than the tall plant. Any idea about how far my light should be placed away from the canopy?
Click to expand...
I'm no expert on LED lighting. You might want to post over in the led section and ask about that.

LED and other Lighting

Growing with LEDs / Inductive / Plasma etc.
www.rollitup.org
 
hotrodharley

hotrodharley

Well-Known Member
Wackgrower said:
Ok I will ditch the bone meal. And I'm still having browning problems on my other plant that's about 8 inches shorter than the tall plant. Any idea about how far my light should be placed away from the canopy?
Click to expand...
You need to be able to measure the PPFD of the light. Requires a meter. Apparently phone apps for lux and some math can do the job. These ain't like HPS.
 
I

inth3shadowz

Well-Known Member
For flower with LEDs I've talked to employees at Mars Hydro and Spider Farmer, typically it's 18 inches 90-100% power for flowering. It's likely the temps causing this though...my basement is super cold during winter and the plants closest to my fans tend to have the same look sometimes. I may switch to HID in winter honestly.
 
hotrodharley

hotrodharley

Well-Known Member
inth3shadowz said:
For flower with LEDs I've talked to employees at Mars Hydro and Spider Farmer, typically it's 18 inches 90-100% power for flowering. It's likely the temps causing this though...my basement is super cold during winter and the plants closest to my fans tend to have the same look sometimes. I may switch to HID in winter honestly.
Click to expand...
I've sure considered adding HPS back in with the LED for winter here.
 
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