The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
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
Brebzzz
Light
Should had ad other Light for flowering ?? Or this one will do the job ?
Week 6
Setup. Lighting
5y ago
1
2
Solved
420Highlifecouple
Auto flower in flower light cycle?
Do I switch my AUTOFLOWER to 12/12 in flowering?Or 18/4, 20/4 from start to finish?
Setup. Lighting
4y ago
3
Solved
Gorrilla420
Which light
So I’m a new grower and I have the mars ts600 for flower and veg but I’m looking at getting some more power when in flower. I dunno whether to get another of the same light which is 100w or go for the mars ts1000 with is 150w but with both ts600 I would be pulling 200w together
Week 8
Setup. Lighting
4y ago
1
2
Solved
Hou_Stone
HID 600w ?
Actuellement j'utilise 400w dans mon 1m². Vous pensez que c'est intéressant de passer mon ampoule en 600w ? Ou c'est trop pour 1m²? Je vais passer en floraison la semaine prochaine.
Week 6
Setup. Lighting
3y ago
1
1
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
3y ago
5
8
Solved
Rubycola
M.H Led grow light TSW2000 300w
Hello i am growing autos with a M.H led light 300W, i am between seedling-veg stage using a lux meter the distance plant-led 30, 35cm,i am dimming 25% to 30% and now turned 25% 20,000lux. I cant make them happy. Is there any advice. Thanks in advance
Setup. Lighting
1y ago
3
3
Solved
kurtzweil
Leaves "praying" after lowering the lamp
I am in week 4th of flowering Laughing Buddha, 220W LED ~60cm from tops. Today I have lowered the lamp and the leaves started "praying", on one (higher) plant the other, mostly-indica Holy Punch seems unaffected. I am curious, is there too much light or sweet spot and it's good?
Leaves. Other
Setup. Lighting
6y ago
1
Solved
Shockolateman08
Light cycle change
Light cycle change mid veg, what's the harm?
Setup. Lighting
5y ago
2
2
Solved
2Jack
Replace my hid
Hi guys I'm looking for a good led lamp to replace my old 600w hid For about 100-150 €.. what do you recommend?
Setup. Lighting
5y ago
2
3
Solved
tricombo420
Need to do something about ?
My plant is 40cm from the light Hps 400w Northern light auto 37 days Flowering 8 days I don't know how it grew so much, I didn't do lst, I'm novice, next time I'll do scrog, I did lst on one and I broke a branch
Other. General questions
Plant. Too tall
Setup. Lighting
4y ago
3
3
Solved
zkittlezjunior
Lumen and light problem
Can i use this light for 40*40 and 1 plant?100w 80lm/w.Is it enough for 1 plant?
Setup. Lighting
6y ago
6
Solved
buddhi_coop
Grow lights
Does this look ok? I have 2 plants not growing as fast as my macchiato plant. The other two are different strains, Runtz & Zittles. I don’t want to over do it but I know light is key so I thought I’d ask. Both 1000 watt uv & the other is led. I’m on veg week 5 of all 3.
Week 5
Leaves. Too few
Plant. Too short
Setup. Lighting
5y ago
3
2
Solved
gruenerdaumen
Licht am glimmen wenn aus
Ist es schlimm wenn meine zeitschaltuhr über PE kabel (grünes) ausschaltet so dass mein licht noch am glimmen ist? Oder mache ich mir zu viele sorgen und es ist nicht schlimm
Other. Other
Setup. Lighting
3y ago
1
3
Solved
sndwich
20hr light to 12/12
Hey guys, want to switch lights to 12/12 so can start getting the Gorilla Glue that never flowered going, the others still finishing up post flush and need to cut them early next week, will it seriously lesson the final crop of other girls to switch before? D
Week 13
Buds. Other
Plant. Other
Setup. Lighting
5y ago
3
4
Solved
MiistrH
Plant touching lights
Plant almost touches my light.. can’t hang it higher any tips on how to deal with this?
Setup. Lighting
2y ago
1
2
Solved
2x2growing
Light burn or nutrient burn?
Hey guys. The tips of my leaves are starting to turn yellow and I’m wondering if this is a nutrient burn or light burn? I lowered my ppm feeding to about 250 a few days ago and am growing in ocean forest fox farm soil. And the light is an optic 2 running just the cobs at 24”.
Setup. Lighting
5y ago
2
1
Solved
pvmhobo
raise light and power to get hight temps and better venting
so whats would be best option for me i have my light on 240w (25%) around 3 ft from plants my tent doesn't get over 74 and its not venting as much as id like my ppfd is around the 300 mark should i raise light and turn to 400w (50%)
Setup. Lighting
9mo ago
6
5
Solved
TheVillain
Growing out instead of up.
Please help out! I moved it into a new pot and topped it last week as suggested. Also new ViparSpectra light at 45cm away @80% power. Nutrients/food yet to arrive. It seems to just be growing out instead of up, and starting to see some white/ burnt looking spots. Suggestions?
Leaves. Curl down
Plant. Too short
Setup. Lighting
4y ago
1
4
Solved
Dony007
The quality of the new lamps?
I bought new lamps I want to insert 2 lamps of 240w per meter per meter. Attach data of the lamps What do you say how much weight can be taken out here ??
Setup. Lighting
4y ago
2
Solved
girlwhogrows
Is this MarsHydro light the best choice for my 4x4?
Is the MARS HYDRO Smart FC-E6500 Bridgelux 680w the best option to use for my 4x4 tent. Will be doing 9 CBD auto flowers as a hobby. Thankyou community!
Setup. Lighting
2y ago
2
2