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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
Growgodalex
Light time
How is she looking and how much light do you guys recommend?
Week 2
Setup. Lighting
5y ago
1
5
Solved
Ema26
Anyone have any history with vibrating HPS lamps? Mine keeps making a buzzing/rattling noise. I’m thinking it’s the metal inside rattling on the glass so if I slightly rotate it it may stop? What do you think? Thanks!
Setup. Lighting
6y ago
4
3
Solved
Agricola_Borealis
Lamp for houseplants?
My neighbours fiancé yesterday evening dropped by and gave me the lamp on the photograph, I have no users manual, but I understood it is for houseplants. I wonder if it is of any use and how I can use it. Whenever the sun shines I will put the plant in the sun of course
Week 2
Setup. Lighting
4y ago
2
3
Solved
FlavorzChaser
Have you had this mars hydro email?
Has anyone had this mars email bk when trying to claim the warranty what did you say or do Help..
Week 3
Setup. Lighting
5y ago
1
1
Solved
AutoGOAT
120W LEaD bulb enough for one plant?
Do you think, this single bulb would be okay for one plant? How far it must be away from the plant? Thanks
Setup. Lighting
6y ago
2
2
Solved
GhettoStyle
friends, help me with advice what kind of yellowness on the leaves is what this can be!?
this is a clone that moved into the system a week ago! Now he has advanced GMB 1.2 (EC) pH 6.1 fertilizer
Setup. Clones
Setup. Lighting
Feeding. Deficiences
3y ago
1
1
Solved
AlienScrOG
co2
co2 ... how long does a 1 kg cylinder last 5 square meters of external surface of the box approximately 10-15 cubic meters around the box outside the box box measures 50 cm x 120 x 190 high now you can do it
Setup. Lighting
Setup. Ventilation
Feeding. Other
4y ago
4
5
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
jayppp
Will the light I am using take me through to harvest
Hi all, first time grower here . I have a small bedroom set up . I am just wondering is the light I am using enough to get me to harvest or do I need to upgrade. I was thinking about the mars hydro TS 1000
Setup. Lighting
3y ago
4
Solved
Cc4mo
12.0v LED strip effectiveness
Will this mini led strip help my other weak light out? Or is it wasted energy. I’m still putting the plant in the sun as soon as it gets onto my balcony but while it’s really cloudy and in the evening this is all I’ve got.
Setup. Lighting
3y ago
4
4
Solved
WeedManz
Light help
Do you think I should bring the light any closer?
Week 2
Setup. Lighting
3y ago
5
5
Solved
Ciujbau
Different plant heights lightning
Any advice how to cope with 1 plant being 30cm higher than other plants and being 20cm away from light? I can go higher another 10 cm max. But will be 60-70 cm away from other shorter plants. Using ts1000 week 6 flowering. Some top cola leaves shows some light burn, nothing major
Setup. Lighting
5y ago
2
3
Solved
B0AGL
Low Watt LED
A friend want to start his first grow and has not much budget. I see that you Guys allways use 200+ Watt LED lamps. Why cant he use like a 30 Watt LED lamp?
Setup. Lighting
6y ago
2
Solved
Abacus
Invert light/dark during a grow
For veg period is better if I start with light on in the day, and off in the night, but for bloom period it will be too cold, can I invert light/dark during a grow? I will have light on in night and light off in the day.. does the plant have any problems if I do that?
Setup. Lighting
3y ago
6
Solved
HierroYOlivia
Some economic but good led for 120x120?
Week 1
Setup. Lighting
6y ago
4
3
Solved
Purple2by4
Switching from led to hps for flower?
Howdy, does anyone switch from a blurple led board for veg, to a hps or similar style light for flower? Why, why not? Is it worth the little extra hassle to buy and install? I like my led just fine, but wondering if there’s more to be gained in flavor, quality & yield. Thanks!
Setup. Lighting
5y ago
5
2
Solved
2x2growing
Light burn or nutrient burn?
Hey guys. The tips of my leaves are starting to turn yellow and I’m wondering if this is a nutrient burn or light burn? I lowered my ppm feeding to about 250 a few days ago and am growing in ocean forest fox farm soil. And the light is an optic 2 running just the cobs at 24”.
Setup. Lighting
5y ago
2
1
Solved
youdan
Lampada led 300w
Buongiorno a tutti questa mattina ho rotto la mia lampada hps dopo 2 anni ha smesso di funzionare! Sto cercando un led 300w qualcuno ha un led usato da dare? Perfavore scrivetemi in privato oppure aiutatemi in qualche modo (non so se potevo fare questa domanda qui)
Setup. Lighting
3y ago
2
1
Solved
Ciujbau
Veg room - different plant stages under same light output - what you think ?for continuous grow (veg tent=TS1000/flo tent=TSW2000)
So I've managed to get a 2nd tent for flowering and now I'm trying to get a continuous grow-like 2 plants every 2 weeks In Veg tent,TS1000 at 100% output and around 50cm(~20 inches) - last photo Trying to veg them for 4-6 weeks max and then into veg tent Any tips?pics attached
Setup. Strains - Photoperiod
Setup. Lighting
4y ago
4
4
Solved
MarkGreenThumb
New Light distance from plant. =D
I got a 200W LED instead of the CFL's. How far should this be from the Plants?? =D
Setup. Lighting
5y ago
2
2