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Back to Grow Questions
LED light distance during germination and throughout.
iLuvBlaznMJ
started grow question 5y ago
How high should I hang VipraSpectra PAR450 lights above the top surface of soil during germination?
Solved
Setup. Lighting
likes
Mr_Weeds_Autos
answered grow question 5y ago
Start at 36"inches and work your way to 18" as the plant grows.
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
Daffie_Toke
Running costs
Dear growers , i was wondering if anybody living in the BENELUX knows wat the costs are of running a spiderfarmer sf2000 with the inline fan that comes with it for an entire run , or even a half year . Thankyou
Setup. Lighting
5y ago
2
2
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
5y ago
2
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Solved
Hou_Stone
HID 600w ?
Actuellement j'utilise 400w dans mon 1m². Vous pensez que c'est intéressant de passer mon ampoule en 600w ? Ou c'est trop pour 1m²? Je vais passer en floraison la semaine prochaine.
Week 6
Setup. Lighting
3y ago
1
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Solved
Stomvi420
Light (distance from plants)
Replaced my LEDs with this CFL (all DIY solutions at the moment) Does this look like an appropriate height to have it sitting?
Week 3
Setup. Lighting
6y ago
1
1
Solved
theoracle
please help <3 preparing for first grow <3
grow box : width 38, depth 42, height 86 for one auto flower the temperature is 32-33, the temperature in the room is the same, it is very warm outside. distance from light 38cm. plan to use lst teq .what would you advise ??
Other. General questions
Setup. Lighting
Techniques. LST
5y ago
3
Solved
buddhi_coop
Gavita Light Dimmer
Is there a dimmer for the Gavita Pro 1700e LED grow light ?
Setup. Lighting
Setup. Seedling
Setup. Other
4y ago
2
2
Solved
Tubington9
Mars Hydro TS1000 and Spider Farmer SF1000D in 26x26 tent together?
I’ve purchased an Mars Hydro FC-E 3000 for my 3x3 tent, so I now have a TS 1000 I’ve removed from the 3x3, that I want to move to my 26x26 and run it along side my Spider Farmer SF1000D. Is that overkill/pointless waste of energy for that size environment?
Setup. Lighting
4y ago
1
1
Solved
MarkGreenThumb
Old School Outdoor, to New School indoor. =D
Old School outdoor Grower. First time indoor Grow, first time using tents. Any and all advice along this way is welcomed. Some questions I have now are... 1. When should I switch form my CFL lights to my HPS's 2. Should I think about switching from HPS to LED's?
Week 1
Setup. Lighting
5y ago
3
3
Solved
Mikewithgreenthumbs420
Switching grown lights not sure what too remove got new led
I got a new veg light and led bloom light my question is should I remove my ballast light from bloom room or can I run both led plus ballast light together. That's what I'm wondering whats the best way to go I'm currently just using this light Last picture is my veg blue an white
Setup. Strains - Photoperiod
Setup. Lighting
5y ago
1
Solved
ClownBaby
28°C
Moved lights from 115cm to 60cm and the temp went from 25°C to 28°C. Any advice? Is it ok?
Week 2
Setup. Lighting
4y ago
6
2
Solved
JacareGrows
Led to hight?
Hi everyone. I'm thinking that the Led Light is to high, its around 70 cm from the plants, should I lower it down up to 50/55 or leave like that until Bloom, and on Bloom put it more close? Some more help on the grow its always appreciated. They seam really beautiful by now 😃
Week 2
Setup. Lighting
6y ago
4
2
Solved
cheesyx
Review this model or help me create a DIY COB plus IR plus UVB grow light.
I've very limited variety of lights in this country so this is all I can find. Also there are no suppliers who provide spectrum charts or any temperature values for those lights. My goal is to make it with the best possible light spectrum. Having IR's also will help on cold days.
Setup. Lighting
5y ago
1
Solved
Plur420
Light height
Light height? All new to led and not sure on the height from plant, anybody able to help please, doesn't seem to be stretching, currently at 16 inches. Thanks in advance 😊
Week 2
Setup. Lighting
6y ago
5
4
Solved
Cezar
What do you think?
Howdy what do you think of these 2 lamps, I am undecided to take it. LUMATEK - LED ZEUS PRO 2.9 - 600W. Or Spider Farmer SE7000 650W LED What do you think?
Setup. Lighting
4y ago
2
Solved
versace_grow
Breaking light cycle during flowering
Does breaking the dark cycle after half an hour of dark will stress the plant? I just opened the box 30 minutes after the light went down during the first week of flowering. Can this make my plants hermaphrodite?
Setup. Lighting
Setup. Other
6y ago
3
3
Solved
Anna_J
Swapping day/night light cycle during flower
Day 22 of flower. Lights are on during the day, 8am-to-8pm but we need to switch to 8pm-to-8am to use the colder night air to cool our lights without using a/c. Would it negatively affect the plants at this point in flower to give them 24hrs dark & completely swap light cycle?
Buds. Other
Setup. Lighting
5y ago
3
2
Solved
mannicropper
LED Lights
Anyone 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
PeppeItalia
Luce rossa e blu insieme in vegetativa.
Secondo voi accendere led vegetativi luce blu, insieme alla luce rossa può fare male ai piantini. Oppure tenere tutte e due pulsanti della lampada accesi insieme non farà solo che bene alle piantine?
Week 1
Setup. Lighting
5y ago
1
2
Solved
morganfreeman420
Distancia de la lampara
Tengo una tienda de cultivo de 120x120x200 y un led de 730w el FC-E6500 de marshydro tengo en mente poner unas 4/5 plantas para mi primer cultivo y quisiera saber si hay alguna guia para saber a que distancia tengo que poner el led de las plantas en cada fase de la planta. THX
Setup. Lighting
3y ago
1
1
Solved
guerilla
Darkness before harvest?
So is there really any benefit to give a long period of darkness before harvest? Once again, I'm on the fence with this...
Week 18
Other. Harvest - Drying
Setup. Lighting
4y ago
16
11