Check the winners The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Log In
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Light pointed at white wall for supplemental lighting?
mexycomeback
started grow question 6y ago
Does it makes sense to have a small 300W COB LED pointed at the white flat painted wall for supplemental lighting? If I point the light directly at the plants I would surely burn them but have no space to move back.
Solved
Week 9
Setup. Lighting
likes
deFharo
answered grow question 6y ago
Yo uso esos cobs pequeños para dar luz lateral directa a las plantas, algunos los acerco hasta 10cm y todo va bien.
likes
Complain
Selected By The Grower
NobodysBuds
answered grow question 6y ago
plus, you are doubling the distance, but that may be the reason you do it...
likes
Complain
NobodysBuds
answered grow question 6y ago
Not the most efficient, but if angling it at the plant from side is too close, you getting post the light (~90%) off one bounce. 81% second bounce...
likes
Complain
Similar Grow Questions
Solved
TheUk420Show
Telos Lighting Brand New Tech ?
Hi Guys so what do you think to a brand new invention by GN in the uk fully water proof bluetooth ghost network end to end encryption dimmable by PPF number (first in the world) ? I have been gifted one to test by GN after meeting the team at a grow expo. What do you think ?
Setup. Lighting
5y ago
5
4
Solved
DogDoctorOfficial
LED Growing intenssity vs distance
Hi Guys , so i have a new led, in this case a https://lumatek-lighting.com/lumatek-zeus-465w-pro/. It's better to have it running 50% at 50 cm or should i rase it hier and incrice power to 75% ? still have 3 more weeks veg ahead and i'm doing 14h1h+5h4h ligth schedule Thanks <3
Setup. Lighting
6y ago
2
1
Solved
Growerxm00
18-6 or 24H Of light
Hello growers, I’m growing an auto and I have it under 18-6 h and she already started to flower, my question is if I can change it to 24 h of light and if there’s any benefits with that, cause I already read that night time will help them recover a bit from stress and I use scrog
Week 7
Other. General questions
Setup. Strain - Autoflowering
Setup. Lighting
6y ago
2
2
Solved
ayahuascaserkan
growing problems and solutions in an area that does not get enough sunlight
the sun is limited, there is only daylight, what problems can there be in the crop? cultivation is done in an illegal area, your suggestions are very valuable for us
Setup. Lighting
6y ago
1
1
Solved
LostInTransit23
How can I get my LED to sit straight?
I'm getting really frustrated I've tried to get my LED to sit straight and it literally won't, any tips? It's got the wire hanging and ratchet ropes
Setup. Lighting
Setup. Other
6y ago
1
3
Solved
2x2growing
Ppfd?
What ppfd do you guys recommend for plants in veg? I’m finding that my light can be too strong at max power even at a 24” distance.
Week 6
Setup. Lighting
6y ago
3
2
Solved
TheHighentist
Standby lights in grow tent, under dark period/night time
My humidifier has a weak blue standby light. Does this make it impossible for me to use during the plants dark period?
Setup. Lighting
4y ago
3
3
Solved
Shockolateman08
I had the lights on for 18 hrs when they're second week of flower...do I just keep it on regular schedule or do I keep the lights off for the extra hours?
Setup. Lighting
6y ago
5
Solved
Jmaninthemidde420
Can you use a 450 watt white led light to start seedlings? If so what distance should the light be and when should I make it closer? The reason I am asking this is because I don’t like transplanting autos as they are fragile to transplanting from what I’ve looked up
Setup. Lighting
4y ago
1
Solved
MrJoint
COULD THE LIGHT BE 7.8in ABOVE THE PLANT?!
☀️Mars Hydro LED TS1000 150w. Could the light be 7.8in (20cm) above the plant? Or just 11.8in (30cm)? For not bud burn 🚫🔥
Week 5
Setup. Lighting
6y ago
2
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
6y ago
4
Solved
SneakyDog
Cheap, discreet lights
Do these things work ? Can you grow anything with them like autos ?
Setup. Lighting
5y ago
12
5
Solved
Martian_D
Led distance
How far would you keep a kingbrite 240w led from plants?
Other. Other
Setup. Lighting
5y ago
3
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
Solved
DevilsBud
Lamp to plant distance for marshydro TS1000
Marshydro TS1000 i am in flowering phase and have my lamp 25 cm over the canape and the dimmer on 100% is this to much for early flowering stage ??? I would like to here from people that are running marshydro TS1000 too
Setup. Lighting
5y ago
8
7
Solved
SlyNJen15
Wzdragon LED grow light
Does anyone have the Wzdragon 1000w LED grow light? What height should it be at each stage? Should I follow what it shows on Amazon. No info was sent in box.
Setup. Lighting
5y ago
1
1
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
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
3y ago
2
Solved
YellahJelle
Weak full spectrum led place in front of window enough to finish bloom?
The weather looks really bad so i guess i need to take her inside a lot. I place her inside a barn in front of the glass door but she still hasnt there much light there. I ordered a 40 Watt full spectrum LED to add on the sunlight. Just read "used power 10 W" Will that be enough
Week 12
Setup. Lighting
Setup. Outdoor
Setup. Other
6y ago
3
Solved
La0laEsMia
Light Burn? Mars Hydro TS3000 at 30% Power, 26 inches away per manual. I have since raised back to 30 inches.
Is this light burn? I noticed some slight yellowing/crispy looking leaf at day 11. Light is about 30% Power, about 30 inches away. I previously had it about 26 inches and raised when I noticed this issue about 24 hrs ago. Pics are updated. Temps: 70-75 RH: 50-60 Soil Runoff: 6.5
Week 1
Setup. Lighting
Setup. Seedling
5y ago
4
2