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Back to Grow Questions
LED light distance during germination and throughout.
iLuvBlaznMJ
started grow question 6y ago
How high should I hang VipraSpectra PAR450 lights above the top surface of soil during germination?
Solved
Setup. Lighting
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Mr_Weeds_Autos
answered grow question 6y ago
Start at 36"inches and work your way to 18" as the plant grows.
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Selected By The Grower
Similar Grow Questions
Solved
Tubington9
Should I dim my TS1000? Ts1000
When using two lights in a small space should I be worried about to much light? The plant is mature and is about to transition to flower, I’m just curious what is too much if any. The TS 1000 is dimmable the sf1000d is not. Lights are 18” at the moment
Setup. Lighting
5y ago
5
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guspirinhes
What distance is the best to star with the 150w cfl bulb ? the plant with 6 day .Thanks
Week 1
Setup. Lighting
7y ago
2
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Solved
Marlboro
Колличество света
Can anyone explain why all the guides and manuals say that autoflowers need 500mmol/cm2 during flowering while photoperiods need 700, when in reality, under sunlight, the plant in the wild gets 1400-1600? Why not give the same amount of light to plants indoors?
Week 9
Setup. Lighting
4y ago
1
2
Solved
Migh_Lo_Beans
Should I lower my light during flowering?
I'm at 24 inches away now, should I lower the light now that she's in full bloom? I went with the recommendation of Mars Hydro and burnt up 3 seedlings as a result. Sadly I only have one bean left of my Fastbuds over this crucial mistake. Running a Mars Hydro SP 250 keep at 36in.
Week 5
Setup. Lighting
6y ago
4
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Solved
FirstTimerFistTimeYer
Wich light to buy
I only have about 80€ anyone can tell me wich light should i buy then? Thanks again for the help and thanks for the help on the other question.
Setup. Lighting
6y ago
7
Solved
Spliffi
Diy Winter auto setup
Lets me know if you think this wil work? We dont have very cold winters. No snow.
Setup. Lighting
4y ago
1
4
Solved
Theia
1 light or 2
I have recently purchased a Mars hydro SP 3000. Great light.. It replaces my Blurple Mars hydro exo 120. I wanted to ask what peoples opinions are about me using both lights for veging. My grow space is not that big. 1.8m x 0.8m and 2.35m high. Will it be too much light and heat?
Setup. Lighting
6y ago
3
Solved
Andreasbudz
Is my 1000watt Led light ok
Hello All, i will be growing 3 plants. Is it ok to use 1000watt led light? Factors: No dimmer Full spectrum What far away from top of plant should it be?
… Show more
Setup. Lighting
6y ago
1
3
Solved
NewJackWeed
Mars Hydro TSL 2000 questions
Other than recommended distance from the manufacture, how do I know how dim/bright the light should be? Also, since these are autos, do I flip at 5 weeks, or just keep going until I’m ready to?
Week 3
Setup. Lighting
6y ago
3
5
Solved
Love_Cultivator
Buying a LED light
Hey there, I am currently wondering if I should rather purchase two spider farmers SF2000 or one SF4000 to fill my 4 x 4'. What do you think? what would you do? Thx for taking time! Peace, L_C!
Setup. Lighting
6y ago
5
4
Solved
GYOweed
Far red Led
Anyone else also use far red for emerson effect and get extra night hours really see a difference too? For sure they seem to be praying a lot harder after setting it up. They sure seem to be finishing faster.
Week 14
Setup. Lighting
5y ago
4
5
Solved
rcs8718
Proper height for T5 dual lamps from seedlings during sprouting stage
I now have my seedlings in solo cups and they are just breaking the surface, what is the height I should have my T5 twin lamps from the top of the cups? I have it currently at about 4 inches from the top of the cups.
Setup. Lighting
5y ago
1
1
Solved
Sillystoat
Lighting schedule?
Many references state the when moving from vegetative to flowering stage the lighting schedule (indoors) needs to be reduced from 18-20 hours down to no more than 12. Why do many here stay at 18 or more the whole way through?
Setup. Lighting
6y ago
1
3
Solved
Shags212
Best Price to Performance LED growlight
Looking at buying another LED growlight for my flower tent and want to know what one is the best price to performance wise. but I want it to better the one I have already. Wakyme 1200w (210w) 120 LEDs x10w was £65 from amazon. To cover 4 to 5 plants at most
Setup. Lighting
5y ago
3
2
Solved
Palancha
Light distance
Hi everyone, what distance from the light to the plant is recommended to start the vegetative period? I see many different measurements on the internet. In this case, it's for some automatic Red Poison plants, with a 360W LED light.
Setup. Lighting
1y ago
6
7
Solved
newbieeeeem7
LED distance in grow 80x80x160
I placed the LED at a distance of 45-50cm from the seeds and consequently it was about 65-70cm from the larger plant. I have 4 plants Is it ok like this? I don't have a luxmeter and I use the phototone app to get an idea of the PPFD in each plant.
… Show more
Setup. Lighting
3y ago
1
2
Solved
Foggedaboudit
Hi first time grower here. Been vegging 4 plants in 80cmx80x160 tent with 150W LED (Mars Hydro TS1000). Start of 2nd week flower today and I added another 150W LED. Could that potentially increase my yield? Thanks!
Setup. Lighting
4y ago
3
5
Solved
Ign33l
6 weeks of veg? I got only 3
Why do i see some auto or non auto diaries with 6 week of veg? When i grew non auto i just had them 3 weeks then switch the light time and changed 400w to a 600w. I learned that because they used to get hella big. And in Auto seeds i switch the spectrum after 3 weeks
Week 7
Setup. Lighting
7y ago
4
3
Solved
PoleKat
Looking for someone to look at my pics and give me advice on ventilation for mini grow room. Also if my plants look good for day 3? Any tips? Thanks!!!!
Hi, wondering is you guys could look at my enclosure and give me some ideas as to when and how I should provide some air circulation to my seedlings? I plan to keep them in here for the next couple weeks like a small grow room. Also, do they look happy for day#3? Advice? Thanx
Week 1
Setup. Strain · Autoflowering
Setup. Lighting
Setup. Ventilation
7y ago
4
2
Solved
Tarantino
Light
Why have I so Little buds? Is it from light , I have two light 75w i think it is to small light . It is my first Grow i dont know a thing .
Week 7
Setup. Lighting
5y ago
3