The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
Ppfd?
2x2growing
started grow question 5y 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 5y 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 5y 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
Vegas_Kind_Budz
Is 1’ away good for now? Personal experience opinions welcome
Ok Guys. My plants are 6 days old now. And I have them under this 72w light that is about 12” away from them. Is it ok to have it this close? I was considering to move it closer before moving to the hig light. Thanks for the opinions guys!!
Setup. Lighting
5y ago
1
4
Solved
Slickchigdog
Led height and power
I have a Enfun EF 2000 and i need to know the power and height setting in seedling stage. Its a 200 watt lamp
Other. Other
Setup. Lighting
2y ago
2
1
Solved
SomeGeek
Light schedule question
They are currently 44 days old, popped up 1st Dec. iam thinking changeing to less to light thinking 18/17 hrs only, any recommendations ? also any other criticism welcome.
Week 6
Setup. Lighting
3y ago
2
1
Solved
Albgrow
I have a question that by myself i cant risolve! I have used ligjt adjust wings 600w but now i want to change them because they cosum a lot of energy and a lot of money for the light bills. I want to change all the light system and to use the Led ones. The closed area is 12m2.
Setup. Lighting
5y ago
1
2
Solved
Nurse
Light distance
Hello, my new lamp arrived today Spider Farmer SF1000. What is the best distance from these plants? It was stated in the manual between 18 and 24 inches
Setup. Lighting
5y ago
1
1
Solved
MangJs
HLG 650r light setup height and power?
Hi Growmies, I have a HLG 650r in my grow space 4x8 its currently situated in the middle. regarding the mounting height to canopy they have recommendation but a bit confuse on how strong are we dialing it in? do we have to max power on this recmnded hei VEG 36 inch Flower 30 inch
Setup. Lighting
5y ago
1
1
Solved
Slickchigdog
Switching to led
When should i place my plant under the led light, right now i have my plant on the windowsill because its still pretty bright outside and i want to safe as much electricity as possible
Setup. Lighting
2y ago
5
3
Solved
Mel_Macallan
Led mounted on side wall instead of top
So I'm thinking about to build a pc grow box, just for seedlings. When they start to be bigger I'll move them to bigger grow box. I have a spare grow light but it's to wide to mount in top of grow box. So I was wondering if I could mount it on the side wall?
Setup. Lighting
5y ago
4
6
Solved
RichBud5
Help! Timer problem.
My timer on 18-6 broke and i'm not sure if the girls had 24 hours for the past couple days... by putting them back into 18-6 will that trick them into flower? Hope not. Thanks :)
Setup. Lighting
5y ago
3
2
Solved
Lillau
Qui peut m expliquer ce schéma ?
Pour 1 ou 2 plante 600w Tente 1m2 100*100*180 Merci Es ce assez ? Bonne culture à tous
Setup. Lighting
5y ago
2
4
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
4y ago
4
4
Solved
Cali_928
Enough lighting?
Looking for some input, I'm looking to get a 4x4 or 5x5 grow tent, my question is would two VIPARSPECTRA 2020 Pro Series P1500 LED lights provide enough lighting? I already have the lights from current grows.
Setup. Lighting
5y ago
3
3
Solved
Martian_D
They don't look too happy
Fan leaves at the top of canopy do not look to happy any ideas why? Light are 35-40cm away
Week 7
Leaves. Wilting
Setup. Lighting
5y ago
1
1
Solved
kardel
Bonsai in Solo cup pot size. How should I treat her.
Hi I just start my experimental solo cup pot size and I decide will grow like a aesthetic bonsai tree. Question is right now i giving her separated light from my current run. low light intensity. Should I give her the same as normal grow? or just slow down a growth rate. TIA
Setup. Strain - Autoflowering
Setup. Lighting
Techniques. LST
2y ago
5
2
Solved
DankCityCeo
Help please
Does it matter if I have one white light led and one purple?🤷♂️🏾🙈
Setup. Lighting
6y ago
1
1
Solved
Mel_Macallan
Hi, can anyone tell me if it's normal, or why those lower branches are stretching so much? I have only one 50w cob light. Which apparently produces equivalent to 150watt... Is that enough? I have only one plant and a very small grow box. Thanks for any advise :)
Setup. Lighting
5y ago
4
Solved
ngenius
hey guys , a have a question regarding light. So, I have 2 autoflowers under a 130w led right now both age 14days exactly. In a couple days a will also have the mars hydro ts600. I am working with a 1meter squared tent. how high sould i hang my lights during veg and flower ?
Setup. Lighting
4y ago
2
4
Solved
Raptor7
HLG 550 V2 RSpec power/height in flower
I’m using an HLG 550 V2 RSpec in a 3x3 tent over one Universal Kush plant. Anyone have experience growing with this light in a similar setup? What’s the best height from plant and intensity level should I set the light to? Don’t want to stress her, just want ideal light levels.
Week 3
Setup. Lighting
5y ago
1
1
Solved
Superjd
Right lighting at day 6 - fluo or HI as both available
Right lighting at day 6? Very happy that all germination looking good on day 6 from seed. I could either continue with this compact fluorescent bulb (15 cm from tiny first leaf) for another week or two OR switch to full HI 250w immediately (30cm from plant) Thanks!
Setup. Lighting
6y ago
1
1
Solved
Shmalevich
the light came on by accident at night
Здравствуйте! Случайно во время сна включился свет в гроубоксе на 10 мин. Слишком ли это пагубно для двух автоцветов? Не станут ли гермафродитами?
Setup. Lighting
4y ago
2
2