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Back to Grow Questions
Light distance from canopy
DennM39
started grow question 5y 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
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Skinnytalls420
answered grow question 5y ago
Germination: 50~70cm Seedling: 45~60cm Vegetative: 40~50cm Flower: 20~40cm Good luck!!!!
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Similar Grow Questions
Solved
Screwie
Distance of light from seedlings
Lost leaflet the light came with so I need to know what distance the Mars Hydro 300W (item MH-300-60LED) should be away from my seedlings. Can anyone help pls? I scoured the web but the leaflet is not listed. Thanks!
Setup. Lighting
5y ago
4
5
Solved
Tubington9
White and blurple led in same tent?
I recently upgraded to a TS1000 for my flower tent, and am waiting on an SF1000D for my veg tent, and now have a tmlapy “1500w” blurple sitting around. Would i gain anything running the blurple and ts1000 in the same tent? Or is it not worth the extra energy consumption
Setup. Lighting
5y ago
1
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Solved
Noahbear
Mars Hydro TSW 2000- Height and Dimmer settings for the various stages
I just bought the MARS HYDRO TSW 2000 Led Grow Light - what should be the distance and dimmer setting on seedlings? Then Veg? Then Flower stage? Any advice would be great? I am currently starting week 2
Setup. Lighting
4y ago
6
5
Solved
chronicon
is the 'greenfingers led grow light 2000w full spectrum' not very good compared to others?
if you don't know the light you can google but there aren't any reviews i can find, compared to say spider farmer 4000 (or others) is it much worse or a little worse, etc? if that much worse when i can afford it someday should i buy another one and count this purchase as a loss?
Setup. Lighting
3y ago
4
5
Solved
ZhugeTsuki
Can too much light in Veg cause EC to skyrocket?
Hello everyone, I have 4 plants in a 3x3 area under three of these lights - https://amzn.to/2MhseVH 360w all together which is what I expected to use during flower, I didnt realise that you dont need to use as much during veg, all plants have had to be flushed with EC's at 10
Week 7
Setup. Lighting
Feeding. Deficiencies
6y ago
1
2
Solved
EXZELENS
LED options
So, I have a 90x90 tent and one TGL Star 60W LED and a Mars Hydro TS600. I´m looking for another light to complement the grow, my go to would be the TS1000, but I would like to know what would you buy with 150 euros? Thanks in advance!
Setup. Lighting
6y ago
3
3
Solved
Indicaman2015
Viparspectra P2000 height and intensity
For those that have experience with the light I'm using, Viparspectra P2000, how high and what intensity percentage should I have it? Currently I'm at 21" at 75% power. Also, I run it 24/7. I have an app on my phone and it says my DLI is at like 56 which seems way too high.
Week 3
Setup. Lighting
3y ago
5
5
Solved
Chaweeder
Spider farmer sf4000
I just ordered 2 sf4000 for my 7'X12' room planning on doing roughly 20-24 autoflower in. I did do a bunch of research but hard to know if these reviews are paid. Anyone used these before and if so are they any good TIA,
Setup. Lighting
6y ago
1
Solved
Tango_Hotel_Charlie
Brown spots
What is this? It's affecting newer growth, first or second set of fan leaves off thee top of the colas. Also, this drooping, is this stress from the light? This is the center of my tent, and would appear to only affect tallest colas of this plant.
Leaves. Curl down
Leaves. Color · Dark-brown
Setup. Lighting
6y ago
5
Solved
cheesyx
Is that possible to do grow light with Samsung LED strips?
Going deeper into idea of doing the quantum board from scratch but instead SMD LED's there are lots of strip LED options. So I want to ask you guys if I have an aluminum plate with a heat sink and coolers, can I fix those stripts there? Or can I rip them off with a heat gun?
Setup. Lighting
5y ago
2
3
Solved
WulfBlud
Maximum / Optimal Lux or FC for LEDs and checking readings
I have a Viaspectra P2500 which is a bit big for my tent but I figured I could dim it and have when I upgrade my tent. I think I am burning my plants though so I am wondering what the maximum and optimal Lux/FC is for LEDs. I have the Light Meter LM-3200 app with diffuser. Ty
Setup. Lighting
4y ago
3
Solved
Automoto
Just wondering if anyone knows anything about these lights
Setup. Lighting
3y ago
5
Solved
dano13
Led help
Looking at a led light it says 600w quantum board. 2 300w drivers 1500 red diodes and 6000 white diodes. Custom made. Does it sound right and what else should I ask before buying or should I not
Setup. Lighting
5y ago
2
4
Solved
clueless_smoker
Light source change stress?
Can changing light source cause stress to your plant? Yesterday I changed from a CFL to a 150w Mars Hydro LED and this morning she looked a bit "sad". I took the photo straight after watering hence the damp soil.
Week 3
Setup. Lighting
5y ago
7
5
Solved
Nurse
Light distance
Hello, my new lamp arrived today Spider Farmer SF1000. What is the best distance from these plants? It was stated in the manual between 18 and 24 inches
Setup. Lighting
6y ago
1
1
Solved
Hou_Stone
HID 600w ?
I'm currently using 400w in my 1m². Do you think it's worth switching my bulb to 600w? Or is that too much for 1m²? I'm going to switch to flowering next week.
Week 6
Setup. Lighting
3y ago
1
1
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
1stForBuds
Buds touching light
Hi peeps.. another question but not so much a big problem... my blue cheese's are coming to the end of there 2nd week of flowering.. just 1 problem I have is 1 of my autos is still growing and is now touching my light I can't higher the light any more what can I do?
Buds. Other
Setup. Lighting
5y ago
1
3
Solved
SirTucksAlot
Will UV (reptile) lights disturb the day/night cycle in flower?
Setup. Lighting
6y ago
3
5
Solved
painspk
When to raise light potency with autoflowers
I don't really know when to raise the amount of light when growing autos. I think I'll wait for them to complete 15 full days and then I'll raise the LED panel to 50cm, change from 20% to 40% potency and observe how they behave.
Week 2
Setup. Lighting
4mo ago
1
1