The Grow Awards 2026 🏆 
Light and plant :D
Mrs_Larimaranswered grow question 5y ago
depends in your light.......ive been using 27 watts led for small plants in a 15-20 cm distance ( high quality fullspectrum led =)
and as iaam having no clue about your light,,, i juust would say no.....
and you write back wich brand you have
Similar Grow Questions
Solved
Prilyfe13
Autoflower Perpetual Harvest Light Height RecommendationsDoes anyone have a suggested insight for grow light height?
AC Infinity IONBOARD 240w LED. 100%
AC Infinity Grow Tent 3x3x6
Autoflower Perpetual Harvest: 4 Week Cycle
Plants: 2 Flowering and 2 Veg.
Schedule: 18/6.
Temp: Day 76° Night 67° Average 74.3°
RH: Average 52%
ThanksWeek 2
Setup. Lighting
3y ago
2
4
Solved
zkittlezjunior
Cob Led Heat ProblemGuys i have a problems about cob led.Im gonna use 3*50W Cob Led full spectrum in a pc case.Do you think is there any heat problem in it?My case is about 50cm and my pot is 8cm.I'll use 2*120mm fans for exhaust and fresh air.And inside i'll insert one 8cm fan.Other. Other
Setup. Lighting
Setup. Other
6y ago
7
Solved
mannicropper
LED LightsAnyone used the Phlizon Cree COB 2000w lights?
I’m running two in a 8’x4’ under a scrog net. 5 weeks into veg but nowhere near where they should be. Used only the COBs in veg as some suggested but had to put on full blast today and hope for some speedy growth before I flower themPlant. Too short
Setup. Lighting
Techniques. ScrOG
5y ago
1
2
Solved
marihoochi
Required and Type of WattageSwitching to 12/12 tonight. Currently using 2 - Spider Farmer sf4000's; need more light for flower period; Should I use a 3rd Spider Farmer 4000 or a 1000W dimmable HPS for maximum THC, Taste and Yield? The SF4000 uses 453W 12 X 6 Flower AreaWeek 8
Setup. Lighting
6y ago
3
3
Solved
Zappdoggy
Light ScienceHas anyone watched some Youtube videos by Dr Bruce Bugbee from Apogee Instruments? I find his lectures on lighting to be the most straight forward explanations I have heard yet. I found his vid called "The New 400-750 nm ePAR Range Explained with Dr. Bruce Bugbee" to be eye opening on lighting colours. I have changed my LED's based on a few of his vids. He explains what plants really want and those Burple lights just don't cut it.
For those that don't know he is a professor at the University of Utah that legally studies cannabis growth.
He takes the science of weed grow to a whole new level.Setup. Lighting
3y ago
5
3
Solved
NewJackWeed
Seeking a reasonably priced light for 2x4x6 tent (still)I'm interested in picking this up. Thoughts? I have a 2x4x6 tent. I believe it's 50w x 8sqft is 400 watts needed?
https://www.amazon.com/iPower-Digital-Dimmable-System-Reflector/dp/B006GGP8P4/ref=sr_1_2?_encoding=UTF8&c=ts&dchild=1&keywords=Plant+Growing+Light+Fixtures&qid=161105y ago
6
4
Solved
2smokeyy
Temporary 24 hours darkness, equipment issue.My light ballest has broken tonight, my lights will have been off for 24hours by the time I can replace, the plants are about 2 weeks from harvest, would it damage the plants to start the light cycle (18 on 6 off) tomorrow after having the light off for 24 hours?Plant. Other
Setup. Lighting
5y ago
3
5
Solved
New_Grower69
HELP!!! Seedling with flowering plants?Hi guys quick question, can I have flowering a plants and seedlings under the same light with same intensity? I've popped a Royal Creamatic but worried I'm gunna fry her in the tent with the other fully developed plants!
Thanks in advance!!Setup. Lighting
Setup. Seedling
5y ago
3
3
Solved
MangJs
Substrate Germination - lightingHi Growmies!,
just a quick question on lighting on germination just want to know your methods.
do you 18/6 lighting or 24 hours on germination period? is it worth doing 24 hours? whats your preffered method
Thanks allSetup. Lighting
Germination. Substrate
5y ago
4
4
Solved
Greenbean420
LED vs HPS - heat outputHey - Does anyone know if theres any difference in the heat output LED vs HPS
I currently have lumii black ballast dimmable 600w, however im using it at 250w and its usually always 27-31c in the tent.
Im looking at buying the Mars Hydro TS3000 LED, or is it not worth it? ThanksOther. Other
Setup. Lighting
3y ago
9
9
Solved
Dr_Perl_Junior
Sorry hat the question earlier before but I'm new here so I dont know how to undo the solved quesion status. The LED has about 300W and I want to dimm it. not simply turn it on/off. Preferably with some kind of integration in home automation systems like Home Assistant. Thanks :)Setup. Lighting
Setup. Other
2y ago
1
2
Solved
FrostyFireFlowers
UV light how to useDoes anyone know if I'm supposed to turn the UV light on by itself for 2 hours a day or is it ok to have it come on while my main LED light is on too? It's the AC Infinity U2 UV Ionbeam they were in stock for 4 days a few weeks ago and I got lucky getting one,ty 4 any helpWeek 5
Setup. Lighting
3y ago
4
8
Solved
NewJackWeed
Max 180w LED output for 2x4x6 tent with 3 plants. Good enough?I have a 3-chip 1000W LED with a max output of 180w (Veg 125w, Bloom 55w):
I'm growing autos in a 2x4x6 tent. I'd like to grow 3 plants at a time. Do I need another grow light? Will the one I have suffice?Setup. Lighting
5y ago
5
4
Solved
Snooziecheesecake
Lighting questionI am running the Viparspectra 450w LED as my light for 4 autos in a 2x4 space. I am worried this isn’t enough, especially because of its lower levels of red. Should I upgrade to something stronger like a Mars hydro 600 or 1000 before flowering start?Or if not Mars something else?Week 4
Setup. Lighting
5y ago
2
5
