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LED light distance during germination and throughout.
iLuvBlaznMJstarted grow question 4y ago
How high should I hang VipraSpectra PAR450 lights above the top surface of soil during germination?
Solved
Setup. Lighting
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Mr_Weeds_Autosanswered grow question 4y ago
Start at 36"inches and work your way to 18" as the plant grows.
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GrowCN
Lighting HorsepowerI have a Horticultural Lighting Group 260 QB V2 R Spec light (260 watt LED). I previously had a 20" x 36" tent and the light was great. I have just gotten a 36" (91cm) x 36" (91cm) tent and wondering if this is enough power for great production or if more light would be better?Setup. Lighting
4y ago
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WulfBlud
Maximum / Optimal Lux or FC for LEDs and checking readingsI have a Viaspectra P2500 which is a bit big for my tent but I figured I could dim it and have when I upgrade my tent.
I think I am burning my plants though so I am wondering what the maximum and optimal Lux/FC is for LEDs. I have the Light Meter LM-3200 app with diffuser. Ty
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3y ago
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Zweibel
Single CF Grow COB LED (300 W) sufficient for one plant?Would like to know your thoughts on my 300-W COB LED (www.amazon.de/dp/B07Z678V5) I’m using in open space on a single plant. I’m not expecting huge yields with this lamp, but I am hoping it will be sufficient to bring a healthy plant to harvest.
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connormcleod47
What is the optimal uMOL/DLI for autoflowers during the flowering cycle without CO2 on a 20/4 schedule?Setup. Lighting
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rasta_puri
Quantum board helpHi friends. I want to upgrade my setup for a quantum board and i see there are a debate ongoing about the ones with samsung diodes and chinese one. Is the difference of price compesate the quality? What is more appropriate in your opinion for a budget around $150-200? Thanks!Setup. Lighting
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Toastdtoast
Changing light schedule on an auto?My plant sprouted 5 days ago, because of temps last night I left the light on and will for the next few days to maintain temp. Its an autoflower but I like having a dark period for my autos. Will it hurt anything if I go back to 20/4 or should I let it ride?Week 1
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4y ago
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dauntless
LUX meter grow questionCan someone check out the LUX meter video and tell me how I should be positioning my lights? I think maybe I have too much light on them.
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Setup. Lighting
3y ago
1
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KINGT88
Lighting, to early, flowering, can I stop this or no. New growerMight be dumb but eh ohwell 1st time grower. Need to know for my next seeds I plant.. So I messed up by putting my plants to early on the 12/12 schedule, now they are starting to flower. Super short! No way I can stop it right? To get more out of my plants?
Buds. Too few
Setup. Lighting
Techniques. 12-12 from seeds
3y ago
6
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Solved
antekirtt
Uncommon brand LED lamp distanceI have the following lamp:
LED Alien strippanel 630W, full spectrum, PPF 1700 umol /s, efficacy 2.7 umol/J
Does anyone have the same?
I have some issues on understanding the distance from canopy, the specifications say 15.2cm above it, but honestly it seems too close.Week 1
Setup. Lighting
3y ago
8
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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 them
Plant. Too short
Setup. Lighting
Techniques. ScrOG
5y ago
1
2
Solved
Kayaboy
Downgrade my light wattage or not?My tent is 80cm x 80cm x 180cm and i use a 400w hps/mh. Based on all light calculations i came across it gives me a total requirements of light of around 160-200 watts. Should i downgrade to a 250w system or keep the 400w and why please, some expert ? ThxSetup. Lighting
5y ago
2
2
