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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
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Solved
Albgrow
I have a question that by myself i cant risolve! I have used ligjt adjust wings 600w but now i want to change them because they cosum a lot of energy and a lot of money for the light bills. I want to change all the light system and to use the Led ones. The closed area is 12m2.
Setup. Lighting
6y ago
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Abacus
18/6 now, can I do different?
Hi guys, in autoflowering grow, there is the possibility to decrease amount of light time? Only for hot temperature problems..
Setup. Lighting
4y ago
1
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Solved
Greenbean15
Too close to the “sun”(light).... any advice?
My plant grew close to 4x it’s original size during her stretch, 10-12” on day one of 12/12 to 46” tall. She’s on day 30 of flower and I set up a second ScrOG net. Other than blocking light to shorter plants, do you see any other potential problems this second net might cause?
Plant. Too tall
Setup. Lighting
Techniques. ScrOG
6y ago
5
Solved
Kdog20
Veg/Bloom switch
My plants are 5 weeks from germination, I have flowers and buds forming but I am starting to worry they aren't growing as they should (I want them bigger). I have had my light veg and bloom switches on throughout. Would you recommend I change over to just bloom switch now?
Week 5
Setup. Lighting
6y ago
4
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Solved
Chaweeder
Led lights
Please help I need led asap what's some decent lights to operate a 4x8 room
Setup. Lighting
6y ago
1
1
Solved
Mikewithgreenthumbs420
When to use just bloom switch on led Bestva 1500 using both veg
When to use just bloom on Bestva 1500 rite now I'm on week 6 flower black widow using both veg and bloom I'm wondering when do I switch the light to just bloom not sure what week to start First grow using led Flower time says 8-10 weeks any advice or stay on both the whole grow
Setup. Strains - Photoperiod
Setup. Lighting
5y ago
4
Solved
jihun
Luma or marshydro fc
Hi Guys,What do you think that of 2 different lights?1. Lumatek Zeus series2. MarsHydrio FC seriesWhich is the better? ( or other hq led)I know the Mars is better price,but i would like to know which is the better in real life ? (No price to value to ratio,real experience.
Setup. Lighting
3y ago
1
4
Solved
eatmykimchi
hlg550 distance from canopy veg
How far from canopy for HLG 550 during each stage? After starting with a cheap LED, without getting a par meter I think 18" @ 50% power, or 32" @ full power for veg? Start higher and increase power every few days?
Week 1
Setup. Lighting
6y ago
1
3
Solved
Herby
Light cycle
As this strain is an auto, going on 12hr of light during flowering won't do her any harm right ?
Week 7
Setup. Lighting
6y ago
3
2
Solved
Basementgrow05
Too much light ?
So started my second run and got everything dialed in but this time I’m running with spf-1000D and the normal spf-1000 is that too much light for the plants that would slow them down ? Together the lights should be around 200w
Week 3
Setup. Lighting
5y ago
2
2
Solved
Cannabisflakes
UV rays - Is it worth
So guys, what are your thoughts about UV light complementation? Earlier this year, I havested an auto flower, and she dind't bulk up the trich production. I ended up with big flowers but with no effect at all. I was wondering if that has something to do with my light setup.
Week 9
Buds. Other
Setup. Lighting
6y ago
3
3
Solved
Odin9
Spider Farmer SF-4000 dimmable
Hi how high should i hang and how much dim %?? whit spider farmer sf-4000 dimmable for seedlings g ??
Setup. Lighting
5y ago
1
Solved
Rollme1kenobi
6” three week old
I was wondering if I stunted my plants’ growth by having my lights at max intensity right off the bat. I also didn’t have vpd dialed in til 2nd week. Organic soil.My pulse one has said 96 light intensity since I got it..should I be lowering the intensity of bulbs til flower?
Week 3
Setup. Lighting
5y ago
1
1
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
1y ago
1
2
Solved
ITAIvangrower
Sonlight apollo 8 plus box 80x80x160
Buonasera a tutti growers, vorrei sapere ho intenzione di comprare questa lampada, ho trovato un affare da un amico attualmente ho un box 80x80x160cm con un hps 250 ma non sono molto soddisfatto e vorrei passare a una sonlight apollo 8 plus vi metto il link, grazie in anticipo 🙏https://www.idroponica.it/led-coltivazione-indoor-sonlight-apollo-plus-8~27322.h
… universal_button_show_more
Setup. Lighting
6y ago
1
3
Solved
Foxtrotoscar
Mars hydro TS600 Faulty
Anybody know what could be up with my light? When I turn it on the LED’s flash on but go straight off. Everything all seems to be connected internally.
Week 8
Setup. Lighting
6y ago
3
3
Solved
MarkGreenThumb
Bulb Distance from my Little babies. =D
Little girls are looking a lot taller today. Will post a new week in 3 days. But as they are growing so fast and I'm still using 125 CFL, How much distance between bulb/reflector and plants should I keep.?? I will be switching to a HPS at some stage,
Week 1
Setup. Lighting
6y ago
1
1
Solved
pvmhobo
raise light and power to get hight temps and better venting
so whats would be best option for me i have my light on 240w (25%) around 3 ft from plants my tent doesn't get over 74 and its not venting as much as id like my ppfd is around the 300 mark should i raise light and turn to 400w (50%)
Setup. Lighting
1y ago
6
5
Solved
K4E2R0R
What size and wattage LED light will I need
I just bought a new grow tent that is 6 1/2 foot tall and 3 1/2 foot wide and 3 1/2 foot long. What wattage and size of led grow light will I need?
Setup. Lighting
6y ago
2
3
Solved
420pete
light bleaching
Why are my leaf tips getting bleached still? I have the light 18 inches from the canopy which is what is recommended for veg, and that's only around 400umol/m2s but the leaf tips keep burning. Temps are low if anything, consistently between 65 and 75 farenheight.
Week 6
Leaves. Color - Yellow
Setup. Lighting
6y ago
1
3