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Back to Grow Questions
Light hours and luxes?
iwantabike
started grow question 4 years 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
likes
Pichu83
answered grow question 4 years ago
For seedlings I always do 24h
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
L8bloomr1008
Flickering AC INFINITY light- S33
I have flickering ac infinity lights. Connected and disconnected to controller. It won’t let me post a video but the video is on my most recent week of flower on my diary. Has anybody ever experienced this? And how did you fix?
Setup. Lighting
a month ago
5
Solved
GEESTGROW
How to dim a Sansi LED bulb
I have a 10W Sansi LED bulb for my grow, but I would like to be able to dim the light since, having limited space and needing to place it close to the plant, I'm having issues. (https://www.amazon.es/SANSI-Bombilla-Espectro-Completo-Invernadero/dp/B08P1RL7KC/ref=asc_df_B082PSBP68
Setup. Lighting
23 days ago
6
7
Solved
Toiletmucus
Is my LED too close or too far from my plant?
So this is my first grow and it feels like she’s growing a bit slow. Currently at day 10. Distance was 62 cm. The LED is 100W. Now the distance is 57 cm. I’m wondering if I’m just impatient. Is this distance appropriate? How is the growth looking?
Week 2
Setup. Lighting
20 days ago
4
2
Solved
BrediniGreeny
Hey growmies✌️💚, so I finally have a PAR meter. With all my 3 LEDs on at the lowest setting I reach like 77 umol max. What would you recommend for seedlings that small like in the picture? I saw seedling/clone 100 - 300. So just wondering how much for my little flowers? 😁✌️
Setup. Lighting
a month ago
1
2
Solved
Toiletmucus
Grow light question
I bought a cheap light by KingLED. It’s only 100 Watts and I’m unsure if it’s enough for one plant. The light has 2 switches, one for veg and one for flower. Should I always have both on since it will be an autoflower?
Setup. Lighting
a month ago
1
5
Solved
Martian
Irregular light schedule.
I am thinking about giving her 24h lights a few days a week and then go back to 18h. Just to give her a boost. Will this irregular light schedule harm her? My first thought is that it doesn’t matter much since she is an auto, however I know that plants love balanced environments.
Week 3
Setup. Lighting
a month ago
10
9
Solved
TruTraTri
Day shift for Photos.
How to to a day shift for photoperiodics without mutation/hermies etc. Light schedule: 18/6; want to shift 8 to 12h backwards/forwards. Just in one shock? (e.g. give them 12h on top) Step by step? 2 weeks enough for recovery for 12/12 switch?
Setup. Lighting
6 days ago
1
1
Solved
CaninhaSativa
regarding the light spectrum ratio. what is the ideal light spectrum for both the vegetative and flowering phases? Do you use 3500K lights during the vegetative stage, or only use cold white lights at 6000K? do you then switch in flower to 3500K lights along with 370-780nm?
Setup. Lighting
3 months ago
6
2
Solved
Justagirlandherweed
What do you think of these Lights please?
Can I have your opinion on these lights for a first time indoor grow please? Starting with autos.. Thank you
Setup. Lighting
3 months ago
2
2
Solved
hightech316
Burn or ?
leafs feel rough , little tiny greens dots with texture on leaf. I found out after bumping the light up 40% Plants did not like. Looked up manufactures suggested hanging / power. Seems I am over powered. The light is more 4x4 or 3x3 then 2x2 Diary is updated Light or Nutrient?
Leaves. Tips - Burnt
Setup. Lighting
4 months ago
9
12
Solved
Dargaville_Dukes
Will increasing light intensity restart stalled seedlings
Seeking advice from Mars Hydro TS1000 growers. When do you increase light intensity during seedling stage? I've had the light 30cm above the plant at 25% power since germination. The plants stalled 2 weeks ago. Can I get them going again by raising intensity or will I fry them?
Week 4
Setup. Lighting
4 months ago
2
15
Solved
TheObserver
Wrong power cable in my LED light: still light when switched down off.
Have you ever made this mistake? My second harvest was someway worst then my first. Sure I did some watering mistakes but during my chores in the room and in the tent, I found out. I used a random power cable on my PAR LED lamp so when It turned off still had some light on. Bang!
Week 16
Setup. Lighting
4 months ago
3
8
Solved
thefrozenking
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
3 months ago
16
13
Solved
Jmaninthemidde420
Light intensity ? For bloom phase
When switching to bloom phase. Should I gradually increase the light intensity to 100% to help plants adjust or should I Immediately amp it to 100% This is a 500 + watt light by viparspectra (ks 5000)
Setup. Lighting
2 months ago
1
5
Solved
Peweez
Connecting 2 SANlight evo 3-100 with AC Infinity Controller 69 PRO
Hi guys, I want to connect 2x SANlight 3-100 1.5 with AC Infinity Controller 69 PRO. I searched on the internet and found that i'll need this sanlight Trolmaster RJ12 cable and this AC Infinity UIS Type-A RJ11/12 0-10V Dimmer. Do I need this stuff for each lamp or can i combine?
Setup. Sensors
Setup. Lighting
2 months ago
2
3
Solved
tksej
lights
How do you use plant LED lights? I am using the BESTVA 3000, which has separate growth and bloom lights. After flowering begins, should I use both the growth and bloom lights together, or only the bloom lights?
Setup. Strain - Autoflowering
Setup. Lighting
2 months ago
2
Solved
Rubycola
M.H Led grow light TSW2000 300w
Hello i am growing autos with a M.H led light 300W, i am between seedling-veg stage using a lux meter the distance plant-led 30, 35cm,i am dimming 25% to 30% and now turned 25% 20,000lux. I cant make them happy. Is there any advice. Thanks in advance
Setup. Lighting
3 months ago
3
3
Solved
luxgrower
Yellowing leaves & tips curling down on 14th day. Coco / Autopot / Hesi / Mars Hydro fc-1500
Would gladly use some help with my first grow 🙏 2 main reasons come to mind after googling: 1. I overwatered thinking it's hard to do since I'm using the Air dome. 2. Too intense light. Was checking a lot of growers that actually grow 24/0 and went for it 75% 40cm.
Week 2
Leaves. Color - Yellow
Setup. Strain - Autoflowering
Setup. Lighting
3 months ago
9
5
Solved
KostasArvas1981
Does anyone know what is the preferred light for veg? HPS OR MHD? THNX
Setup. Lighting
3 months ago
6
8
Solved
RGGROW
Canopy clearance
I'm growing a photoperiod and been using the SF1000d light. Having to run the light much closer to the canopy than suggested during the entire process. I'm in flower currently and she still looks healthy as close as 6 inches from the light. Is this normal? Is my light below spec?
Setup. Lighting
2 months ago
4
2