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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
CampaCavallo
NEW LED HELP FOR NEW NEXT INDOOR SEASON
At the end of September, the indoor season of CampaCavallo starts again! We need a new light and this time LED. I'm looking for one that can replace HPS 250w without spending a fortune .... Any advice? I also accept discounts or donations from producers in exchange for advertisin
Setup. Lighting
3y ago
4
4
Solved
Abacus
Better temperature for early veg
In auto flower indoor, Early veg, is better have 18ºC/24ºC, or stai around 23°C during all the day. I have an Inkbird that I can set on 23, that is cool when is light off, it warm it up. But with light off it’s drop down temperature to 23.
Setup. Lighting
3y ago
1
6
Solved
Chacazulu1
Extra belichting
Hallo . Ik zit in de derde week bloei van mijn royal gorilla planten ze staan onder een hps lamp van 600 watt als ik nu nog een extra lamp van 400 watt zou plaatsen zou dat de opbrengst vergroten of een verspilling van energie . Groeten Gorilla
Setup. Lighting
6y ago
5
3
Solved
AccidentalB
Height Spider Farmer SE3000 week 5 flower
PAR increased to 600 PPFD, done by lowering the light to 35 cm above canopy. What do you think? is that too low? I'm using a Spider Farmer SE3000 (300 Watt). Anybody experience with this light? How high did you hang it from week 5 of flower to the end?
Week 13
Setup. Lighting
3y ago
1
1
Solved
MN-Frozen420
switching too 12/12 with auto's in the tent!
i bought 3 autos, it look like this is not an auto, its a photoperiod!!!! question, if i switch to 12/12 will this hurt my other two auto growing?
Week 6
Setup. Strains - Photoperiod
Setup. Lighting
1y ago
16
13
Solved
czlok
Lamp distance at first weeks
What is the best distance for my lamp (Mars hydro 150w) in Plants in this earliest stages?
Setup. Lighting
5y ago
3
1
Solved
Hou_Stone
a good lamp ?
Good morning, Currently I have an hps and I'm looking to invest in a good lamp. Do you have a good one to recommend? I have a room 100x100x200 cm Currently I want to take the mars hydro fc3000 I am not sure if it is powerful enough for my room? I would like to have opinions
Setup. Lighting
3y ago
4
6
Solved
ljack494
What do you guys think of the grow to date?
Setup. Lighting
Setup. Other
5y ago
2
Solved
halexxo
Boost buddy
Ahora con la subida de temperaturas estoy alcanzando los 31-34°C en el indoor. Uso Boost Buddy un generador de CO2 a través de la descomposición de bacterias. Solo con eso ya estaría bien o debería modificar de alguna manera el indoor para no llegar a esas temperaturas? Gracias
Week 10
Setup. Lighting
3y ago
4
Solved
NorthernFrostCannabis
Hortilux Blue: 1000 Watt Metal Halide Grow Light
Has anyone used a Hortilux Blue: 1000 Watt Metal Halide Grow Light through their entire grow? Are the price worth it? Color Temperature 5500K
Setup. Lighting
5y ago
2
2
Solved
Oldqldbuddy
What is optimal lighting for 6x10x7.5ft flower room
What would be optimal lighting for coverage in my 10ft×6ft×7.5ft flower room, 2 600w led blurples and 2 600w hps really doesn't cut it and I want to upgrade asap to avoid future overcrowding
Setup. Lighting
4y ago
1
1
Solved
CaptGrow
Auto and regular plants in one box.
I got an auto plant in a box, waiting for flowering to start very soon. Light schedule 20/4. Now I planted a new photoperiodic seed in a same box. What should I do, keep the 20/4 light schedule before the auto plant finishes and after change to 18/6? Or change it right now?
Week 1
Setup. Lighting
6y ago
3
3
Solved
BudXs
Which of the two options do you choose and why: Option 1: 1440w over 40sqft giving 36w per sqft Option 2: 1440w over 48sqft giving 30w per sqft. The difference is an extra 2x4 of grow space. Do i go for more lumens or more plants? This is my first LED setup
Week 4
Setup. Lighting
6y ago
9
4
Solved
Odin9
Spider Farmer SF-4000 dimmable
Hi how high should i hang and how much dim %?? whit spider farmer sf-4000 dimmable for seedlings g ??
Setup. Lighting
4y ago
1
Solved
Untiedmymind
Flowering lights never turned off
Power outage messed with my system and lights didn't shut off. Need a little advice. Should I just stick to the original schedule and she will just get 30 hours of light for one day or should I turn them off.
Week 14
Other. General questions
Setup. Lighting
5y ago
2
Solved
EJBudz
Changing Lighting Schedule
The days on the plants are since planting, so i was going to keep the vegetative light schedule until 5 weeks since planting, then start moving towards a 12/12. Is it even optimal for an autoflower to have a traditional 12/12 lighting schedule during flowering?
Week 4
Setup. Lighting
3y ago
4
5
Solved
KaptainKronicX
How to keep room dark during flower?
How important is it to keep the plants in COMPLETE darkness during lights off during flowering? Thinking of running some ducting with cut-to-size furnace filter out the vent hole on the side of the tent which supplies air right now. Will that be enough?
Week 1
Setup. Lighting
5y ago
4
4
Solved
DWCbuds
Lights airstone c02
What light to plant distance would you set it at? The only test I've done is at 25 inches its stable at 80°f and 75% humidity. When I lower it to 18 inches, the tent read 85°f and 73 humidity. Other question I have is what's your favorite air stone(disk)? Lastly, add c02 yes/no
Week 2
Setup. Strain - Autoflowering
Setup. Lighting
Setup. Ventilation
5y ago
2
2
Solved
HAPPY91
Maxsisun PB Grow Light?
Anybody use Maxsisun PB lights for flower?
Setup. Lighting
5y ago
3
Solved
DutchDoobie
Advice what lamp for vegging.
High guys, My Jack Herer will move soon to a closet with a 60x60 cm surface. For flowering I will use a 180 watt Hans Panel. And I do have 2 led lights at home for vegging. My first option is the Spectrabox. And my second option is the Cree Cob led. What is my best option?
Setup. Lighting
3y ago
2
5