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Back to Grow Questions
Grow light
Spudsfinigin
started grow question 6y ago
When is it best to switch to my big lights
Open
Week 1
Setup. Lighting
likes
Answer
JuanHaze_Arg
answered grow question 6y ago
It all depends on the size of the plants! Maybe after the 3rd week of veg is when they really start needing more light!
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Complain
MangoDudu
answered grow question 6y ago
When u have filled 3/4 of the orizontal space and not less than half height of the max you have ( thake care of the minimum lamp distance for the height check)
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Complain
Similar Grow Questions
Solved
MBnVA
Lights
Any thoughts on lights being on 24 hrs?
Week 6
Setup. Lighting
Techniques. Main-lining
5y ago
3
2
Solved
LeroyDagobert91
Can i add a light to help flowering
can i add a light to help flowering even if it is a 6500k one i noticed that my actual 2700k led light is less powerful that the one i used for vegetative phase can i add (with the 2700k one) it even if it is a 6500k one ?? will it slow down the flowering ?
… Show more
Setup. Strain · Autoflowering
Setup. Lighting
3y ago
2
3
Solved
Italy_Grower
Reverse flowering time
could I reverse the time when putting into bloom and switching from a 12/12 program? I could turn on at 00:00 and turn off the light at 12:00, because honestly I keep them on during the night and I turn them off at noon and I would like to do the opposite, can I?
Other. Other
Setup. Lighting
5y ago
5
5
Solved
AutoZone420
Light help please :)
I’m trying to figure out the optimal height to hang my KingLed 1000w full spectrum at for seedling, veg, and flower. I feel like part of why my plant was is so small is due to incorrect hanging of the light but idk
Setup. Lighting
6y ago
2
2
Solved
Hardcunt12
Is my lighting too high
As can be seen on first image plant leaves got trapped inside seed casing for a day or 2 before it fell off, not sure if I have my light to high as my plants steam is 3+ inch in length
Week 2
Setup. Lighting
7y ago
5
5
Solved
GrowLawyer94
Leaves up?
Hey Guys 👍🏻 Quick question, I have my light (HPS - 250w) 40 cm above the plants - should I get the light lower? One of my babies has the leaves going up. I guess she is enjoying the light but I have doubts regarding the light distance.
Week 2
Leaves. Curl up
Setup. Lighting
6y ago
2
2
Solved
24Gamez
When to turn LED to max power?!
This is for those of you growmies using LED.... When do you guys usually give em the max dose? Rn I'm sitting at 75% and starting week 3. I think they're doing pretty decent
Week 2
Setup. Lighting
5y ago
2
3
Solved
SerpentPower
Using side lighting
Do you guys ever put the grow light on the side? As soon as I moved the grow light to the side of the plant and set it up at a good height it grew like little shop of horrors. It's a sox weeks autoflower white widow from I49 genetics.
Week 1
Setup. Lighting
5y ago
3
Solved
DWCbuds
Lights airstone c02
What light to plant distance would you set it at? The only test I've done is at 25 inches its stable at 80°f and 75% humidity. When I lower it to 18 inches, the tent read 85°f and 73 humidity. Other question I have is what's your favorite air stone(disk)? Lastly, add c02 yes/no
Week 2
Setup. Strain · Autoflowering
Setup. Lighting
Setup. Ventilation
6y ago
2
2
Solved
Growladyeastmidlands
Led lights and autos flowering
I need help in my veg area I have 6 flowering autos also I'm using a king.plus 1600w led light I also have 2 600w led lights and I not sure what is best for the veg area I want to use the 600w lights cos cheaper but will the flowering plants cope with the lower watt lights or not
Setup. Lighting
5y ago
3
3
Solved
Rangaku
HID to LED mid grow
Has anyone ever moved a plant from HID lights to LED during flower ? Keen to hear from your experience as it’s looking likely that I’ll need to do exactly that in the near future .
Setup. Lighting
4y ago
6
5
Solved
calculated
Useful Stuff - Light Plan - Print and Fill
Since we have no dedicated section to post useful stuff - i use Q&A to share some helpful light schedule with you. Feel free to comment below if you have questions or additions. Make sure to check my diaries as well - i promise you we can learn together!
Setup. Lighting
7mo ago
8
8
Solved
EJBudz
Pruning?
Pruning ideas along the stems? Was thinking that some of the branches at the bottom that may never get over the lid of the pot should be snipped off. Also, good idea to keep blue/red light shining under the canopy?
Week 5
Setup. Lighting
Techniques. Defoliation
4y ago
1
1
Solved
Abacus
Better temperature for early veg
In auto flower indoor, Early veg, is better have 18ºC/24ºC, or stai around 23°C during all the day. I have an Inkbird that I can set on 23, that is cool when is light off, it warm it up. But with light off it’s drop down temperature to 23.
Setup. Lighting
4y ago
1
6
Solved
Jebbwardo
What LED to get? how close can you have LED?
What LED light should i purchase for 1.2m x 1.2m x 1.8m high lighthouse tent, cant be a square one because of the shape of the tent plus ive looked at the Skyline 600w MK2 but would like some experienced advice. Is light distance an issue.
Setup. Lighting
7y ago
1
8
Solved
HappyLittleAxeDents
Lamp to Plant distance - Outdoor.
If growing outside, what is the best way to calculate lamp (star) to plant distance for the journal each week based on time of year and rotation of our lovely planet? I am being facetious, of course! It's just a fun question for you all. Hope everyone out there good!
Setup. Lighting
Setup. Outdoor
6y ago
5
3
Solved
Onlypotent420
Hps mixed with mars hydro 600 yield?
Hey all! So i been thinking about ways to cut heat of course lol. So I’m thinking about getting a mars hydro 600 and running it with my 400w hps at 250w on the dimmer. Do you guys think I will yield about the same as if I was just running the hps on super lumens?
Week 6
Other. General questions
Setup. Lighting
6y ago
3
3
Solved
TheBonnieRobin
How to tell if light is damaging plant?
I'm using a Mars Hydro Ts600. Manufacturers advice is to keep height at 12'' minimum above the canopy in flower but other growers report it can hang as low as 10''. In identifying optimum height how would I be able to tell if it was too low for my plants? What should Iook for?
Week 8
Setup. Lighting
6y ago
3
3
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
3y ago
2
3
Solved
AlienScrOG
Set TS 2000 2x2 ?
Par? Tsw2000 2x2? Now set 50%
Week 12
Setup. Lighting
6y ago
3
2