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Back to Grow Questions
Ppfd?
2x2growing
started grow question 6y ago
What ppfd do you guys recommend for plants in veg? I’m finding that my light can be too strong at max power even at a 24” distance.
Solved
Week 6
Setup. Lighting
likes
HeavyHittah
answered grow question 6y ago
250 PPF for seedlings 400 to 600 for veg 600 to 850/900 in flower.
1 like
Complain
Selected By The Grower
GMSgrows
answered grow question 6y ago
Put your hand under the light at the height of your canopy., if your hand feels comfortable under the light for 1 minute then your girls will be fine. Cheers
2 likes
Complain
Similar Grow Questions
Solved
MOcaver
Hello, I am using a viparspectra par1200 which has the veg and bloom adjustment knobs on autoflowers. My question is, should I only be using veg during veg and bloom during bloom? Or can I just turn that sucker on full blast the whole time? Thanks
Setup. Lighting
6y ago
2
5
Solved
VermeerT
New person to grow, what is picture with lamp?
Hi! I just to start first time on weekend is GD safe? I just now have a mars lamp it is looking like recommend and cheep but is difference picture with numbers and I do not know what is this. Can someone help me what high I should put it? I am with auto is this 12 hours or more?
Setup. Lighting
5y ago
4
4
Solved
lukasbodo
Lightning Mc Queen
Why do you light a Plant more than 20 hours a day ? Maybe this a stupid Question, but i want it to know my brothers (;
Setup. Lighting
5y ago
5
Solved
Spliffing_Around
Light intensity question
current light is dimmed at 50 percent power,yesterday I undimmed it and the plants seem to take it well,shall I leave it undimmed or wait till flowering ?The plants are on week 4 basically and till now have been in dimmed light setting 50 percent power.One more light s due soon
Week 3
Setup. Lighting
4y ago
8
7
Solved
Student_of_Science
Trying to get setup right
I know I prob need to get a nicer light and ditch all the crap lights but for now I have what I have. Perhaps after some success I may be able to get a new light to replace all of them. But how far should it be? 2 feet above rockwool cube? And what watts per plant
Setup. Lighting
4y ago
2
2
Solved
Lillau
Lux pour nos cultures
What is the minimum and maximum lux for germination? For vegetation and growth? For flowering? Thanks for your answers
Setup. Lighting
6y ago
5
5
Solved
SAC87
Light timer Problem
Hey Growers. So I made a dumbass mistakes…..for the last 18 days I have had my light timer set for 12 hrs 15 mins on and 11 hrs 45 off. They are looking good and budding up. I’m wondering is that close enough to 12/12 to have my day 1 flower be true for accuracy sake. Thanks
Week 7
Setup. Lighting
4y ago
2
6
Solved
starphish
Looking for unsponsored responses... need light...my car cost 1000$ and I can't justify anything close to that. Flowering a 4x4 area..should I wait for tech to develop and HPS in the meantime? Convince me otherwise with your experiences! #budget
Week 1
Setup. Lighting
7y ago
1
1
Solved
Abacus
Led lamp
A good and cheap led for 60x60x140 cm (23x23x55 inc)?
Setup. Lighting
4y ago
2
Solved
einamio
Can a 1000w LED grow light be closer than 60cm (24") to a seedling?
Different sources are saying: 1000w LED light should not be closer to a seedling than 60-75cm (24"-30"). The seedling should be getting 5000-7000 lux, 100-300 PAR (PPFD 18h) and 12-20 DLI. Question: Can I put the light closer at ~40cm, dimmed to match the needed lux, par and dli
Setup. Lighting
Setup. Seedling
3y ago
3
3
Solved
Biggy2k20
Mars hydro 2000w genuine or not?
Hi, I have just purchased a Mars hydro 2000w and since there are a few fakes about I was wondering if anyone knew by looking at this image that it was genuine? It was purchased from https://marshydroled.co.uk/
Setup. Lighting
5y ago
2
1
Solved
tksej
lights
How do you use plant LED lights? I am using the BESTVA 3000, which has separate growth and bloom lights. After flowering begins, should I use both the growth and bloom lights together, or only the bloom lights?
Setup. Strain · Autoflowering
Setup. Lighting
2y ago
2
Solved
Gavinkennedy91
Light distance to plants in flower.
What is the best light distance during flower? I'm currently going into my second week of flower and wondering the best height for light. Its currently sitting at 40cm but I have been told to bring it up to 60-70cm during flower? Any tips would be hugely appreciated. Thanks guys
Setup. Lighting
6y ago
1
2
Solved
3lementa1
Best LEDs or small HID to replace 1000W dimmable HID for small space
I'm using a 1000w HID setup I had from before, running at 50% in a cool tube. It's loud and not efficient. Maybe it's time I switch to LEDs or a 250 HID. I don't want to sacrifice bud quality but I'm low on funds. Any recommendations for a good light that will fill this space?
Week 5
Setup. Lighting
5y ago
5
Solved
PREPPYPUNK
LOWERED LIGHTS TO 9 INCHES FROM TOP FROM MFGRS SUGGESTED 18 INCHES FOR LAST FEW WEEKS OF FLOWER, FANS BLOWING ON TOPS AND TEMP IS FINE FOR PAST WEEK. CAN THIS HELP BUD GROWTH? THANK YOU!!!
Week 9
Setup. Lighting
6y ago
3
2
Solved
growbie
light dilemma
When shine only with flower light, i reach 20,000 lux units in the buds area. But when i turn both lights on at once, both the growth and bloom spectre, the lux units increase to 65,000. I wonder if the extra growth light will affect the flowers that are already blooming. Thanks.
Setup. Lighting
6y ago
3
2
Solved
StDeacon
Grow light
Hello everyone, have asked several times now about Grow lamp and have found one and would like to ask you again what you think of the? A picture of the data of the lamp
Setup. Lighting
6y ago
2
Solved
2Jack
Replace my hid
Hi guys I'm looking for a good led lamp to replace my old 600w hid For about 100-150 €.. what do you recommend?
Setup. Lighting
6y ago
2
3
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
5y ago
2
Solved
tiasmaaa
Use lamp while waiting the sun ?
Would it be worth it for me to go and buy a CFL bulb at a DIY store while I wait for the sun to come back? Or is it not good to have 2 different types of lighting (sun and cfl bulb)? And what kind of cfl bulb I could take?
Week 3
Setup. Strain · Autoflowering
Setup. Lighting
Setup. Outdoor
5y ago
3
3