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 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
likes
Skinnytalls420
answered grow question 5y ago
Germination: 50~70cm Seedling: 45~60cm Vegetative: 40~50cm Flower: 20~40cm Good luck!!!!
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
Mordf0kazzz
LED CFL
Ya alguien utilizo este tipo de bombillas? Tienem 130 watts cada una Gracias
Setup. Lighting
6y ago
1
2
Solved
LesClaypool_777
Light issue
Im using 2 22 PAR LED lights for two plants of Purple Hulk. They are about 4 weeks old, and about 1 ft tall. This is my first time using an auto strain so im not sure about light and bloom change or when to do it if even needs to be done? Anyone got some pointers to help me?
Week 4
Setup. Lighting
6y ago
2
2
Solved
PI2_farms
Will this work?
Hey there growers. I’m looking for any suggestions if there are any. My girl has out grown her tent height wise. I secured her to the side of the tent to angle her. Any other options or suggestions? Or should she be ok? Sorry new grower here.
Setup. Lighting
5y ago
3
4
Solved
Spiritsnsmokes
what are you suggestions on Home-Made LEd grow lights and also if you can reccomend cheap alternatives please how i can make this work?
Hello there, fellow growers. I am facing trouble finding a LED grow light in my country right now. I saw a couple of DIY ideas to make a homemade LED grow light using a panel and LED Strips. Can I grow using my own grow light? how many watts of led do I need for 3x3 space?
Setup. Lighting
6y ago
1
Solved
Lillau
Lampe led 100w pour une plante ?
Lampe led de 100 w Pour une plante est ce assez? Ou plus ? Merci
Setup. Lighting
6y ago
6
6
Solved
Simsim
Need your help for LED
Hi guys, i need your help 🙏 I have to upgrade my led, wich one is the best for a 2x2 (60cmx60cm) growtent ? So what do you think of : - Optic Led Phatslim 1Xl 104w x2 - Optic Led Gmax 150 x2 - Mars hydro FC3000 - SF Se3000 - Lumatek Attis 200 Thank youuu ! 🙏
Other. General questions
Setup. Lighting
Setup. Other
5y ago
2
2
Solved
TheObserver
Wrong power cable in my LED light: still light when switched down off.
Have you ever made this mistake? My second harvest was someway worst then my first. Sure I did some watering mistakes but during my chores in the room and in the tent, I found out. I used a random power cable on my PAR LED lamp so when It turned off still had some light on. Bang!
Week 16
Setup. Lighting
2y ago
5
7
Solved
haze_gino
LED distance meizhi 120 watt
hi guys, my question is… how much distant i should use my meizhi LED 120watt ( real watt ) from my plant? currently i using it at 50cm distance from the plant.
Setup. Lighting
Setup. Other
5y ago
3
3
Solved
Insertcoin
Should i raise the lamp to force the strech?
I had the light the past few weeks 30cm over the plant on 100% wich has 930ppfd in 20h duration it was all together 65 DLI. I want to force the strech from now. Do you think i should raise the light up tp 50cm over the plant? The plant made nearly 20cm within the past weeks.
Week 5
Plant. Too short
Setup. Lighting
2y ago
6
1
Solved
SCHurricane
When to switch GC 4 from Growth to Full Spectrum
At what stage do you switch the GC4 from Growth to Full Spectrum?
Setup. Lighting
5y ago
1
1
Solved
marzadz
light on humidifier :(
okay I think I might have fucked up (lol). I bought a new humidifier. And I didn’t realize it has a light in it. And i run it in the ten over the whole night. It’s not powerful at all but it’s also not just a little led. Do u recon my plant will be okay. I covered it now.
Setup. Lighting
5y ago
2
2
Solved
Dillsnills
Should my ViparSpectra p2000 be enough for 2 autos in my 2x4 tent or should I add my king led 1200?
I'm starting 2 Glueberry Og Auto's from Dutch Passion, is my ViparSpectra p2000 enough for my 2x4 tent or should I put my king led 1200 in with it?
Other. General questions
Setup. Strain - Autoflowering
Setup. Lighting
5y ago
3
4
Solved
Mud868
730nm supplement light, best way of using it?
hey, so I have a Light, with additional 730nm far red LEDs, I can separately turn them on and off, and I am not sure how I should use them, any Ideas? like before lights on, and before lights off or after lights off? I want to do that 13.5hr light cycle in flower...
Setup. Lighting
4y ago
5
5
Solved
mushimushi
BUY NEW LED LIGHT 650
what do you think about HLG 650r for next grow? it will be good light for 4x4 tend ? if i buy it need co2 ? its good without Uv
Setup. Lighting
4y ago
4
Solved
90sStoner
Kingbrite 240W
Anyone else using Kingbrite 240W lights? I’m running 2 in a 4x4 tent. About 30” from canopy dimmed way down. Just shut 1 off, feels like too much light in early veg. Curious on the lighting distance and intensity during veg and flower
Setup. Lighting
5y ago
4
3
Solved
Cdric69738276
Culture rapide
De plus,je suis adeptes de culture rapide,je cultive en sog en donnant 2,3 semaine de croissance a un programme éclairage 20/04. Et la dans ma nouvelle box,je compte mettre 9 pots de 7l. Et souvent des indica dominant.style la variété qui me donne le sourire en ce moment gelato
Setup. Lighting
4y ago
2
Solved
RealTrees_uk
Noob question
I have 2 mars hydro ts1000 leds as my normal set up but I have also put back up my 600w dual spectrum HPS on an angle running at 4 to give extra light coverage, just wanted to know if there was any point in doing this as I’m not sure quite new to growing thanks in advance 💯✌️
Setup. Lighting
6y ago
2
2
Solved
mushimushi
Strange Bud ....
what she need , but its not seem dense ok she need some week more but its like but its not grow so much , maybe its phenotype ,meybe light excess or nutrient deficit ?
Buds. Not fattening
Setup. Lighting
Feeding. Deficiences
4y ago
1
5
Solved
Eva16
SOG question,tent
In 10 square meters what is a ideal ventilation and carbon filter, i want to do SOG with 5 600w hps is it possible?
Setup. Lighting
Setup. Ventilation
5y ago
2
2
Solved
Green_Man_420
Light intensity
My plants have been looking sad for a couple weeks. Tried everything then the other night I turned my light down to 40% giving a DLI of 28 they perked right up with 24 hours. I have now put it up to 60% giving a DLI off 39 will this be ok or should I keep it low. Week 2 flower.
Setup. Lighting
2y ago
1
2