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Back to Grow Questions
Light distance from canopy
DennM39
started grow question 4y ago
My 4x8 tent has two 2000watt led lights in it .. what’s a good distance to keep my lights above the canopy ?
Solved
Setup. Lighting
likes
Skinnytalls420
answered grow question 4y ago
Germination: 50~70cm Seedling: 45~60cm Vegetative: 40~50cm Flower: 20~40cm Good luck!!!!
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Selected By The Grower
Similar Grow Questions
Solved
Grandmas_Boy
AC Infinity T22 discontinued?
Did AC Infinity discontinue the Iongrid T22? If so, then why? I can't find a shred of it on their website other than the user manual. It was an amazing option, and a nice in-between the Ion board and the Evo.
Setup. Lighting
9mo ago
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Fletchy
Seedling light height?
My marshydro tsw2000 is set to 100% how far should it be above seedlings? Currently 50cm / 20inch
Week 1
Setup. Lighting
2y ago
2
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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
9mo ago
2
Solved
potfromgreece
Led bulb 54watt in total
Is 6x9w led bulbs(2700k from Leroy Merlin) is enough to grow a plant? 54w in total.
Setup. Lighting
5y ago
4
Solved
Terp1
variable Lichtzyklen bei Autoflowers?
Idee für nächsten Grow. Hat jemand schon mal versucht bei Autoflower die Lichtzyklen anzupassen um die Pflanze auf voller Leistung zu fahren? Meine Idee ist die Beleuchtung während des Grow anzupassen auf: Seedling 24/0, Veg-Phase 18/6 und späte Blüte 12/12. Input? Erfahrungen?
Setup. Lighting
3y ago
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Solved
HueyBrown
What light for flowering
Hi! I have a full spectrum light bulb red/blue and a small amount of white and another growing light bulb but more white/yellow. As I'm transitioning to flowering, which bulb should I use to get big buds? I can't find clear answer on the web. Thanks 🙏🙇♂️
Week 6
Setup. Lighting
6y ago
3
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Solved
GlockAbuser
Is this a sign of too much light?
I’m noticing the leaves grow extremely close to each other, should I be concerned at this stage, should I pull the light higher back? This is day 3 of week 2, I’m feeding it full advanced nutrients line up for veg. And drying out for a day and a half between waterings
Week 2
Setup. Lighting
2y ago
2
3
Solved
ItsGrowingOnMe
Eyeball and advise on my set up, and is this seedling stretching?
Is my set up good until my humidifier comes? (using inflow air from in-line fan with a tray of water for humidity for now). I set up an additional light because I was concerned that this bad boy was stretching and want to provide some extra light for lower canopy later.
Setup. Lighting
4y ago
4
5
Solved
izzy89
Mars Hydro FC4800 vs FC-E4800
FC4800 = 2016 samsung diodes| 2,8 µmol/j |1347µmol PPE -- FC-E4800= 2646 bridgelux diodes | 2,7 µmol/j |1328µmol PPE Both are 480watt lights... Is there a difference between µmol 2,7 and 2,8 when it comes to yield? Is the FC4800 worth the extra money? Doesn't cost much more
Setup. Lighting
4y ago
5
3
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
5y ago
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Solved
Kronos56
Hybrid Light (Hps QB)
Anyone ever tried hps and led hybrid lights for a grow? What results did u get and what is ur take home message for growers using hybrid lights
Week 6
Setup. Lighting
4y ago
2
2
Solved
KINGT88
Lighting, to early, flowering, can I stop this or no. New grower
Might be dumb but eh ohwell 1st time grower. Need to know for my next seeds I plant.. So I messed up by putting my plants to early on the 12/12 schedule, now they are starting to flower. Super short! No way I can stop it right? To get more out of my plants?
Buds. Too few
Setup. Lighting
Techniques. 12-12 from seeds
3y ago
6
4
Solved
Madmike88
Switching light schedule
Can I turn my lights on 24hrs (currently 19 on 5 off) for the next week and then switch them back? (In week 4 of veg). Currently in a 3x3x5 tent with a light and heater and the vent open. The 5x5x7 I have is in my garage, no room in the house and 6 plants total
Setup. Lighting
5y ago
1
2
Solved
buddhi_coop
Temperature Control
Help! How do I get my temperature down? I have all 3 vents open & 4 fans blowing. My air duct hasn’t come in the mail yet so I can’t set up my exhaust fan yet.
Setup. Lighting
Setup. Ventilation
Setup. Other
4y ago
3
3
Solved
coloradogromie420
light upgrades
looking to upgrade light in the next year whats best for a 4x4 non dimmable and no hps gotta keep electricity bill low as possible im currently using 1800 watt x6 cob
Setup. Lighting
4y ago
2
Solved
Penguin
Just ordered a 150W Quantum Board, can I swap my Blurple UFO mid grow to the new board? Is it possible to increase flower size this late into a grow?
My Blurple apparently uses 230W actual draw but is advertised as 600W. If that 230W value is correct, does that suggest my new, much more expensive QB is not as good? Will it make a difference to the plants health? What are the benefits from the QB? Thanks!
Week 8
Buds. Other
Setup. Strain - Autoflowering
Setup. Lighting
6y ago
3
3
Solved
dauntless
LUX meter grow question
Can someone check out the LUX meter video and tell me how I should be positioning my lights? I think maybe I have too much light on them. My meter says 600 (x100) that puts me at like 60000 lumen. The converter I used put that to 1541.36 umol/s/m2 which is a lot of light already
Week 7
Setup. Lighting
3y ago
1
3
Solved
heythere12345
Should i lower the lamp?
It looks kinda stretched
Setup. Lighting
4y ago
1
2
Solved
ihatemycat
UV led strip
Has anyone tried or knows if there are any benefits to adding a UVA/UVB led strip? I currently have a 18w strip on one side of the growbox as a test, the specifications should be as follows: http://www.ledlightinghut.com/files/365nm%20UV%20SMD5050%20LED%20datasheet.pdf
Setup. Lighting
5y ago
1
4
Solved
Showmethewaytogrowhome
Veg lighting approach? Switching from cfl to hps?
I started my second grow a couple weeks ago with a 130w cfl in my 1m veg cupboard. I’m thinking I will make the switch to a 250w hps soon. I don’t want to overheat the space. Do you think this is a good strategy? I’ll flower the autos in my 1.4m tent with 600w hps.
Setup. Lighting
5y ago
1
3