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Back to Grow Questions
Light hours and luxes?
iwantabike
started grow question 6y ago
Can i use 24 hours of continue light, its a 9watt cfl, i used lux meter app and it says that seedlings are receiving 50000 lux, its that okay?
Solved
Setup. Lighting
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Pichu83
answered grow question 6y ago
For seedlings I always do 24h
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Selected By The Grower
Similar Grow Questions
Solved
Weedster
light cycle
Hi, My grow is now under 18/6 light cycle and last night my timer got broken, she was 14 hours in darkness. What should I do now ?, Can I keep 18/6 cycle, or do I have to switch to 12/12?. I hope she dont freak out 😪
Week 5
Setup. Lighting
6y ago
1
1
Solved
KnightRider
PPFD
Hi Peeps,Ive just started looking at PPFD recently. Please can someone who grows autos tell me the PPFD they use for seedling, veg and flower. There is an article on here but i think its for photo periods.Many Thanks
Week 1
Setup. Lighting
3y ago
2
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Solved
Steek88
Temperature
Yes that’s incorrect I don’t have a thermostat just yet but I know the plants happy prob 15 degrees with fan there I don’t wana lift the light just yet as i don’t want it being a talk skinny plant.it’s to be moved in the next 2 e weeks to its bloom cycle
Week 2
Setup. Lighting
4y ago
3
2
Solved
Mud868
730nm supplement light, best way of using it?
hey, so I have a Light, with additional 730nm far red LEDs, I can separately turn them on and off, and I am not sure how I should use them, any Ideas? like before lights on, and before lights off or after lights off? I want to do that 13.5hr light cycle in flower...
Setup. Lighting
4y ago
5
5
Solved
marzadz
Light too close/too far ?
Is my light too far/ too close ? It’s at 20inches away from a 8 day old plant. I’m using the MarsHydro TS600 W. Thanks ! I don’t want to burn it / for it to stretch too much as I have a 140 cm tall tent. Thanks !! :)
Setup. Lighting
5y ago
2
3
Solved
iopiopiop
Not enough light? Help?
I think my flower is not getting enough light. How can I make do with the light on my balcony (that only hits the plant from the side for about 6 hours a day). Any tips or tricks for increasing yields in my "lightless" situation? (Growlights are out of the equasion due to space)
Week 6
Other. General questions
Setup. Lighting
6y ago
3
3
Solved
Kenpowarrior
Light question
I grow at 18/6 light now for 2 weeks going into 3rd week. From what week do i change my light to 12/12? They are automatics.
Setup. Lighting
6y ago
3
4
Solved
AUTOASSASSIN215
New 4x4x8 Tent Need a better light 400 budget any suggestions??
I have a new 4x4x8 grow tent growing about 4 to 5 plants so now i have to upgrade the light i’m on a budget about 400 dollars Any suggestions or strategy
Setup. Lighting
6y ago
12
14
Solved
Lillau
Qui peut m expliquer ce schéma ?
For 1 or 2 plants 600w Tent 1m2 100*100*180 Thanks Is this enough? Happy growing everyone
Setup. Lighting
6y ago
2
4
Solved
GermanGrows
Light height
Hello all I have a mars hydro tsw 2000. I was noticing the recommended height is 24 inches for seedlings. Is this at 100% intensity? That's well over 1000 ppfd by my meter. I thought seedlings could only handle 200-400?
Setup. Lighting
5y ago
1
Solved
Growgodalex
Light time
How is she looking and how much light do you guys recommend?
Week 2
Setup. Lighting
6y ago
1
5
Solved
MoMaximum
LED 45 W
Is the light spectrum of the lamp suitable for the current phase, or will I run into problems?
Week 2
Setup. Lighting
3y ago
5
8
Solved
Smoth313
Leafes curl up
Hey, these are my Autos at the beginning of day 6. The leaves are curling up a bit, is that normal/okay? Or is it light stress? The lamp is an AC Infinity Evo 4 300 watt, I had it running at 40% since day 1 and then reduced it to 30% after day 3. The distance is 45cm.
Leaves. Curl up
Setup. Lighting
2y ago
4
3
Solved
MrJoint
Distância e potência do Led
For the seedling stage: Is the LED power at 25% (mars hydro TS1000) and a distance of 60cm from the plant adequate, or can I reduce the distance for better growth during this stage??
Week 2
Setup. Lighting
6y ago
3
Solved
Danbibiqn
Grow light
Hello people,i was thinking is the light i have at the moment enough for my seedling it's 23w 6500k it's day 10th since it sproud and i am not sure if she is growing fast enough.The genetics Blueberry× Ruderalis or Blueberry auto Feminized.
Setup. Lighting
Setup. Seedling
5y ago
1
2
Solved
SmokinJuan
How big of an issue is light? HELP
How do you know whether to raise or lower your lights? My LED is pulling about 250watts from the wall... Box said keep light 30" away during veg... But I'm not so sure about that. Thoughts? How will I know if it needs more/less light?
Setup. Lighting
6y ago
2
2
Solved
Humble_Lion
How to reveg plants after preflowers by the end of april outdoors?
How big are the chances to bounce the plants back to veg after preflowers by the end of april and 14h of day length? Mostly cloudy weather, warm day temperatures (30c) and cooler nights (8c)in the old greenhouse simulated probably to much end of summer vibes.
Week 11
Setup. Strains - Photoperiod
Setup. Lighting
Techniques. Main-lining
3y ago
6
6
Solved
IniquityX12
Light intensity
I'm at the start of week 3, should I crank my light up to 100% or give it another week?
Week 2
Setup. Lighting
3y ago
5
3
Solved
leo__bulero
How many plants in a 70x70x160cm tent with 100W?
Hello, I have a grow tent kit 2x2 with a 100W 301H EVO Spider Farmer light. I have put there three 11L pots. But now I realize the size/light of my tent might not be enough. Could I manage by adding an additional 60W lamp you reckon or is it best to discard at least 1 plant? Thx
Setup. Lighting
2y ago
2
1
Solved
Bluebeast007
Please help! Light Needed!
Just going to pop this into the universe, but if anyone is willing to sponsor a grow light to someone in South Africa, please dm me. Really want to keep my grow alive. And would really appreciate it. Only need 200watts at least.
Week 3
Setup. Lighting
5y ago
4
4