Vote Now 🏆 for the Grow Awards 2025!
By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
How to use a led lamp
Abacusstarted grow question 3 years ago
How do you use a dimmerable full spectrum led lamp? When full power? When less? Distances?
Solved
Setup. Lighting
likes
crimsonechoanswered grow question 3 years ago
every led is different. different light spread, efficiency, spectrum etc.
post which leds youre using then maybe people can guide you in the right direction
Similar Grow Questions
Solved
Blubbiblubb
How to manage a tall plant with a thick stem in week 1 of flowering?One plant I ordered online was pre-grown. Now, it’s about 20 cm taller than my other plants. At the top, the taller plant gets more than 1000 PPFD, while the lower canopy gets about 500 PPFD. It’s currently week 1 of flowering. The stem is too thick to bend down.What would youdo?Plant. Too tall
Setup. Lighting
4 months ago
5
7
Solved
Smoth313
Leafes curl upHey das sind meine Autos anfang Tag 6.Die blätter wölben sich leicht nach oben ist das normal/okay? oder ist das Lichtstress? Lampe ist eine AC Infinity Evo 4 300 watt hatte ich seit Tag auf 40% laufen und habe dann nach Tag 3 auf 30% reduziert. abstand habe ich 45cm.Leaves. Curl up
Setup. Lighting
4 months ago
4
3
Solved
leo__bulero
How many plants in a 70x70x160cm tent with 100W?Hello, I have a grow tent kit 2x2 with a 100W 301H EVO Spider Farmer light. I have put there three 11L pots. But now I realize the size/light of my tent might not be enough. Could I manage by adding an additional 60W lamp you reckon or is it best to discard at least 1 plant? ThxSetup. Lighting
4 months ago
2
1
Solved
eppeep42
Height Difference when growing different strains in one tentIm afraid my Gorilla will outgrow the Lemon Cherry significantly in height, will that be a big problem? or will the lemon cherry maybe catch up a bit in full flower so the difference in light intensity wont be that big? both same age. Spiderfarmer SF-1000 (2024 Version)5 months ago
5
4
Solved
Chucky324
New UV Supplemental Light BarsHello. I looking for someone with experience with the supplemental light bars. Is there any tips or tricks with these lights. How's your experience been with them? Anything else I need to know about them? Do they work like advertized?Setup. Lighting
5 months ago
3
4
Solved
OnlyAutos
experienced growers are in demand😵💫💡Hey volks 🙌 I'm trying to grow 3 different grow phases in my 4x4 tent, but getting too much problems with my light.(Mars Hydro TSW 2000) its too strong for my little plants. Can you give me same advice about hight/intensity?
Thanks alot and happy growing🌱Leaves. Tips - Burnt
Setup. Lighting
5 months ago
2
3
Solved
Fizwig
Enlighten me (Grow light advice)Hey fellow growers,
I'm revamping my grow room and need a new 300W LED light. I'm looking for the best possible light output without breaking the bank on electricity. Any recommendations for energy-efficient, high-performance lights in 2024? Your expertise is greatly appreciatedSetup. Lighting
5 months ago
1
Solved
GeminiCQC
Help with issues IDI have a photoperiod in a 5 gal using BAS light. It is currently day 3 of week 4 , and I'm getting some damage on the tops. Would this be light stress or another issue? The tips are starting to go light green. Using the 200 watt light for the 2x4x8 ac infinity tent.Leaves. Tips - Burnt
Setup. Strains - Photoperiod
Setup. Lighting
6 months ago
2
2
Solved
L8bloomr1008
Do you lower light intensity and temps towards the end of flower?So I’m in mid flower, start of week 7 to be exact. I’m curious on when you guys start pulling back light intensity and going with a little cooler temps. I’m running a 240W S33 from AC infinity in a 3x3.
Should I be going strictly off of PAR or VPD at this point.Setup. Lighting
6 months ago
1
3
Solved
RGGROW
Canopy clearanceI'm growing a photoperiod and been using the SF1000d light. Having to run the light much closer to the canopy than suggested during the entire process. I'm in flower currently and she still looks healthy as close as 6 inches from the light. Is this normal? Is my light below spec?Setup. Lighting
7 days ago
4
2
Solved
connormcleod47
What is the optimal uMOL/DLI for autoflowers during the flowering cycle without CO2 on a 20/4 schedule?Setup. Lighting
15 hours ago
3
3
Solved
Rubycola
M.H Led grow light TSW2000 300wHello 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 advanceSetup. Lighting
14 days ago
3
3
Solved
KostasArvas1981
Does anyone know what is the preferred light for veg?
HPS OR MHD?
THNXSetup. Lighting
10 days ago
6
8
Solved
luxgrower
Yellowing leaves & tips curling down on 14th day. Coco / Autopot / Hesi / Mars Hydro fc-1500Would gladly use some help with my first grow 🙏
2 main reasons come to mind after googling:
1. I overwatered thinking it's hard to do since I'm using the Air dome.
2. Too intense light. Was checking a lot of growers that actually grow 24/0 and went for it 75% 40cm.9 days ago
9
5
Solved
CaninhaSativa
regarding the light spectrum ratio. what is the ideal light spectrum for both the vegetative and flowering phases?
Do you use 3500K lights during the vegetative stage, or only use cold white lights at 6000K? do you then switch in flower to 3500K lights along with 370-780nm?Setup. Lighting
a month ago
6
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
a month ago
3
8
