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Back to Grow Questions
LED light distance during germination and throughout.
iLuvBlaznMJ
started grow question 4y ago
How high should I hang VipraSpectra PAR450 lights above the top surface of soil during germination?
Solved
Setup. Lighting
likes
Mr_Weeds_Autos
answered grow question 4y ago
Start at 36"inches and work your way to 18" as the plant grows.
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
SF2000_3x3
24 or 18 and 6
Been running my lights 24 hours a day on my seedlings. Since I am growing autos, should I be at 18 and 6 now? Or should I keep running them 24 for the first couple of weeks to help veg up little before giving rest? This is my 1st time growing autos and 1st indoor grow in 20 yrs
Week 1
Setup. Lighting
5y ago
3
4
Solved
NederGreens
Help de decide tent and light for my setup
I want to so some quick yielts with autoflower. Maximum of 4, with a 100 watt light. - What tent do you recommend (will a 2,3 x 2,3 mars hydro be enough?) - What light do you recommend? (i see many 100 watt lights but some people pushing it with 300 watt lights, i won;t do co2)
Setup. Lighting
1y ago
3
4
Solved
Tryna_grow_Tonya
Changing lights
Just finished my upgraded grow space, Im going from dual spectrum hps to full spectrum LEDs, I have a couple of plants in flower in the old grow which I'm planning to dismantle, now is changing lights during an issue or?
Setup. Lighting
5y ago
1
1
Solved
Pochette
Too much streching for 15th day of growth?
Too much stretching? She is been exposed to 10000 lux of light from 4 x 50W full spec LED COBs. U think I should lower the lights?
Setup. Lighting
5y ago
3
3
Solved
Lew420
Bad idea?
Will a mars hydro TS1000 be too strong for a 60x60x140cm tent? I have been using a TS600 and TS1000 in tandem in a tent 4x too big for the light level, I have been growing strong and tasty buds but with low yields so downsizing my tent size to maximise the light.
Other. General questions
Setup. Lighting
1y ago
3
3
Solved
MoMaximum
LED 45 W
Ist das Lichtspektrum der Lampe für die aktuelle Phase eigentlich angemessen oder werde ich Probleme bekommen?
Week 2
Setup. Lighting
2y ago
5
8
Solved
Purple2by4
Switching from led to hps for flower?
Howdy, does anyone switch from a blurple led board for veg, to a hps or similar style light for flower? Why, why not? Is it worth the little extra hassle to buy and install? I like my led just fine, but wondering if there’s more to be gained in flavor, quality & yield. Thanks!
Setup. Lighting
5y ago
5
2
Solved
StDeacon
Grow light?
I recently asked a question about 2 lamps. Here is another lamp that has less blue and red but much more white is sufficient for a plant or max 2
Setup. Lighting
5y ago
2
Solved
Bingo86
Light height and brightness
Can anyone please suggest a good height/distance I should have my light at this stage please and what percentage I should have the light dimmer on? Thank you
Week 1
Setup. Lighting
4y ago
3
3
Solved
hannabis420
Slow indoor seedling growth
4 days since sprout, issues with light timer, seedlings ended up getting 48 hrs of light after they sprouted, and this AM I found that the timer did not turn the light back on so it got 11 hours of dark last night instead of 6. Could this be detrimental to seedling?
Setup. Strain - Autoflowering
Setup. Lighting
Setup. Seedling
5y ago
1
1
Solved
Jmaninthemidde420
When yo increase light intensity
Is it safe to increase light intensity on this seedling yet? If not when would u increase light intensity? I have 1 main light on top and 2 side lights on it. I have 2 more side lights. I want to gradually add light from what I’ve heard. it get 50% extra natural light from window
Week 2
Setup. Lighting
2y ago
1
1
Solved
FlyMeToTheMoon
Can you make an Auto flower by changing the light schedule?
Ok, before everyone jumps on this with the obvious answer - I understand that you don’t NEED to change the lighting for an auto to flower, but my question is can you, if you wanted to, flip an auto to flower by changing the light schedule to 12/12?
Setup. Strain - Autoflowering
Setup. Lighting
5y ago
3
6
Solved
KCduzit
When to flip into flower?
currently midway through my 9th week of veg and am wondering when I should send plants into flower, should I double check sex first? (Feminized seeds) or wait until my screen fills out more? Plants are in 3 gallons pots and I worry that they might get rootbound if I veg Longer.
Week 8
Setup. Strains - Photoperiod
Setup. Lighting
Techniques. Other
5y ago
2
2
Solved
ShivaPriya
Confused with light schedules for outdoor growing
Hi fellow growers, I'm really confused with light schedules for outdoor growing. Everywhere I see 18/6 for veg and 12/12 for flowering. However at my place I get ~13hours of daylight (not always sunlight) Would my plants get into flowering if daylight is reduced to ~11 hours?
Week 1
Setup. Lighting
Setup. Outdoor
Feeding. Schedule
4y ago
5
4
Solved
hooolian
24 hours daylight in flower mistake
I have made a mistake - have 4 tent set ups each different digi light timers - this tent has mistakenly been left on (24 hours daylight!) for just over a week - should be week 4 flower. can it be saved? any advice? I have put it right so should get the 12 hours dark like the rest
Setup. Lighting
3y ago
3
3
Solved
growbie
light dilemma
When shine only with flower light, i reach 20,000 lux units in the buds area. But when i turn both lights on at once, both the growth and bloom spectre, the lux units increase to 65,000. I wonder if the extra growth light will affect the flowers that are already blooming. Thanks.
Setup. Lighting
5y ago
3
2
Solved
Smokey89
Lights
Hi guys I've just upgraded my light to the spider farmer ts2000 I've got it at 30" from canopy set to 60% is this to high?
Week 2
Setup. Lighting
4y ago
5
Solved
BudzEU
ViparSpectra P600's Brightness (What Percentage should I set it to?)
I have a Viparspectra P600 and my question is that what percentage should i set my light to? Should i follow the instructions or set it higher than it should be? I read some people are setting it to a 100% from the beginning and they keep it that way. Any recommendations?
Setup. Lighting
3y ago
2
2
Solved
arkhive
LED's wont shut completely off
Lights seem to go on a "standby mode" instead of being all the way shut when timers switch them off. Should I buy some other timers? These were brand new, cheap ones though and both the same. Lights are HLG 600 RSPEC and both did this.
Week 4
Setup. Lighting
4y ago
1
2
Solved
Ghost2022
CR600 1000w
Hi, Can someone please tell me with the cr600 1000w by Fecida how far away they would put the light on a 2 inch seedling of Green Crack and what percentage they would have the power at?
Setup. Lighting
3y ago
2
3