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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
darbyog
Distance from pot to light during germination
Worried about our light power and distance to the pots, should we be running it at full power with the light higher in the tent or vice versa? Also very unsure about watering amounts in these early stages and is it okay for water droplets to be sitting on the growth? TIA
Week 1
Setup. Strain · Autoflowering
Setup. Lighting
Setup. Seedling
6y ago
4
4
Solved
Rene1968
Avg PPFD
What do you think about my PPFD at this veg. Periode? Look at picture
Week 5
Other. Other
Setup. Lighting
4y ago
6
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Solved
TonkaSun
what is correct light schedule for indoor germination and seedling, and then transplant outdoors?
I plan to grow a photoperiod plant outdoors from spring to fall, but the germination and seedling stages will be done indoors. For the indoor part, can I use a setup with 18 hour light schedule? Or should it be 12 hours? I don't want to trigger flowering when I put it outside.
Setup. Lighting
4y ago
1
6
Solved
SlyNJen15
Wzdragon LED grow light
Does anyone have the Wzdragon 1000w LED grow light? What height should it be at each stage? Should I follow what it shows on Amazon. No info was sent in box.
Setup. Lighting
5y ago
1
1
Solved
SaltCity
Does my LED need more red spectrum for flowerin?
I have an HLG 100v2 LED grow light at 4000K. They say 3000K is better for flowering. Does it make any sense for me to add some cheap red LED strips to add red spectrum? I’d rather not buy another more expensive light if I can just supplement this one. See picture.
Week 8
Setup. Lighting
5y ago
1
3
Solved
hinterhofgrower
UV LED slowing down growth? Sorry previous question without the question!
The plant has a rectangular area in the middle where it is not growing as quickly. The difference is almost 10cm. I suspect the lamp. Could it be that the centrally installed UV LEDs are causing this? They should grow more inside because of more light.
Week 7
Setup. Lighting
2y ago
10
5
Solved
MN-Frozen420
switching too 12/12 with auto's in the tent!
i bought 3 autos, it look like this is not an auto, its a photoperiod!!!! question, if i switch to 12/12 will this hurt my other two auto growing?
Week 6
Setup. Strains · Photoperiod
Setup. Lighting
2y ago
16
13
Solved
Lil_room_4_my_plants
What's the ideal height for the LED lamp at this vegging state? SHould I water them with less water more frequently or more water less frequently? Tnx for any help!
Week 3
Setup. Lighting
5y ago
3
3
Solved
Sdubb78
lights on dim cuz of heat
So Ive only got my lights(mars hyd tsw2000) at 50% with dimmer and its almost 29 C during day. Am I worried?
Week 1
Setup. Lighting
5y ago
2
1
Solved
cheesyx
Review this model or help me create a DIY COB plus IR plus UVB grow light.
I've very limited variety of lights in this country so this is all I can find. Also there are no suppliers who provide spectrum charts or any temperature values for those lights. My goal is to make it with the best possible light spectrum. Having IR's also will help on cold days.
Setup. Lighting
6y ago
1
Solved
MrGreen92
Asymmetrical baby seedling
Hi everyone, just need an opinion on my poor seedling that looks a bit mutated and stressed, came home today and my timer decided to break and just stay on no matter what you press.. My heater comes on when the lights off and was 28c in there 🙄 should I move the light away?
Leaves. Curl up
Leaves. Twisted
Setup. Lighting
5y ago
5
6
Solved
MiyaguiOkPolilla
What light you recomend for 0.60x120cm room? No more of 300€
What do you think would be the right light for my indoor setup for under €300? Tent from @MarsHydroLED 0.60x120 cm I've thought about the TSL2000 OR MAYBE TWO FROM ANOTHER MANUFACTURER
Setup. Lighting
3y ago
8
8
Solved
Dankbudz1
Spider farmer
Quick question can I use my spider farm sf 1000 alongside my sf 600 to give of more light thanks
Setup. Lighting
5y ago
2
2
Solved
Dankbudz1
Hps
Is a 600 watt hps suitable for a 80x80x160 grow tent or is that over kill thanks
Setup. Lighting
5y ago
6
4
Solved
EJBudz
Adequate Lighting with this LED?
wondering, do i need more light than this spider LED 1000? If not, should i be cranking this spider LED to 100% or keep it at 25% (thinking this is hitting that 20-30 Watt/ft2) (total sqft is at 11)
Setup. Lighting
4y ago
6
5
Solved
AllHomeGrow
LED LIGHTS 440 nn 660nm
Hi Growers, LED light spectrum 440 nm and 660 nm, AutoFlower strain? Tell me your Experience plz! SPECS: Supply Voltage: 85-265VAC Wattage: 22W Wave Length: 450nm 660nm
… Show more
Setup. Lighting
6y ago
1
1
Solved
Rangaku
HID to LED mid grow
Has anyone ever moved a plant from HID lights to LED during flower ? Keen to hear from your experience as it’s looking likely that I’ll need to do exactly that in the near future .
Setup. Lighting
4y ago
6
5
Solved
Abacus
How to use a led lamp
How do you use a dimmerable full spectrum led lamp? When full power? When less? Distances? Mine is 1000w but this is what I find, maybe are specific for 600w one.
Setup. Lighting
4y ago
3
Solved
Jhort
Need LED light recommendation
I'm growing in a 2x2 grow tent with (1) 54watt full spectrum optic led. I'd like to add a led light for less then $100 that will help cover the tent. when it's 100% full of flowering canopy. I'm not hitting my corners evenly as is. What light is best for my situation?
Setup. Lighting
6y ago
4
4
Solved
Hou_Stone
a good lamp ?
Good morning, Currently I have an hps and I'm looking to invest in a good lamp. Do you have a good one to recommend? I have a room 100x100x200 cm Currently I want to take the mars hydro fc3000 I am not sure if it is powerful enough for my room? I would like to have opinions
Setup. Lighting
4y ago
4
6