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Back to Grow Questions
LIGHT HEIGHT / INTENSITY?
EL_CHAPO_420
started grow question 3y ago
IS IT BETTER TO HAVE THE LIGHT INTENSITY LOWER AND THE LIGHTS LOWER OR HAVE THE INTENSITY AT 100% AND RAISE THE LIGHT?
Solved
Setup. Lighting
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BEACHBUDZ757
answered grow question 3y ago
i would recomend maybe 25% and keep it 12" at seedling to keep from stretching then up it 50-75% @ 18" veg and then crank it to 100% for flower and use the photone app or get a par meter (if you have the money) to check ppfd and adjust height
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Selected By The Grower
Similar Grow Questions
Solved
Stoli_LeMonjello
Good T5HO flower combo, 3000K and PureBloom? http://www.growagromax.com/products/t5-grow-lamps/t5-pure-series/agromax-pure-bloom-t5-high-output-grow-lamp/
Thanks to all for your great advice! This is my first grow, currently in veg wk 5, using 8 x 6500K, 4’ T5HO. Flipping to flower in 2-3 wks, will use 4 x 3000K tubes and planning to get 4 AgroMax Pure Bloom tubes. Is 50/50 mix of 3000K and Pure Bloom a good combination of light?
Week 5
Setup. Lighting
6y ago
2
2
Solved
GringosGarden
Lights turned off
Forgot to reset light timer and lights shut off today for 2 hours before I caught it and turned them back on anything to worry about? Temp dropped to 71 f
Week 1
Setup. Lighting
6y ago
1
1
Solved
Vegas_Kind_Budz
I have grow space 48 x 24 x 60, I have an LED 2400 W, AC infinity 4 inch in-line fan, temperature is creeping up to around 86°, vents open at bottom of 10 should I use a humidifier to lower temperature? Add a fan?
Setup. Lighting
6y ago
4
7
Solved
88kasanova
GTMAR 1000watt full spectrum light
I bought a gtmar full spectrum 1000 watt light off amazon, does it really put off 1000watts?? My 4 plants look great except I can tell that some of the under foliage isn’t quite getting enough light, I’m doing some LST.
Week 5
Setup. Lighting
6y ago
2
5
Solved
LongBeachStoner
24 hour lights in veg?
Is a 24 hour light cycle good for my plants as I have read? Should I switch to 16/8?
Week 2
Setup. Lighting
5y ago
6
6
Solved
K4E2R0R
What size and wattage LED light will I need
I just bought a new grow tent that is 6 1/2 foot tall and 3 1/2 foot wide and 3 1/2 foot long. What wattage and size of led grow light will I need?
Setup. Lighting
6y ago
2
3
Solved
rcs8718
Proper height for T5 dual lamps from seedlings during sprouting stage
I now have my seedlings in solo cups and they are just breaking the surface, what is the height I should have my T5 twin lamps from the top of the cups? I have it currently at about 4 inches from the top of the cups.
Setup. Lighting
5y ago
1
1
Solved
MarkGreenThumb
Bulb Distance from my Little babies. =D
Little girls are looking a lot taller today. Will post a new week in 3 days. But as they are growing so fast and I'm still using 125 CFL, How much distance between bulb/reflector and plants should I keep.?? I will be switching to a HPS at some stage,
Week 1
Setup. Lighting
5y ago
1
1
Solved
Dillsnills
Opinions on how these 2 r looking and any advice on going forward is greatly appreciated.
I've read mixed things on when a plant looks like it's praying, some say sign of light or heat stress others say it's a sign ur plant is happy.Opinions on how these 2 r looking? Day 9,temp74-75 day, 70-71nght,57rh, ViparSpectra p2000 at 23inches at 40%, Glueberry Og Auto.
Setup. Strain - Autoflowering
Setup. Lighting
Setup. Seedling
5y ago
3
Solved
420Highlifecouple
Auto flower in flower light cycle?
Do I switch my AUTOFLOWER to 12/12 in flowering?Or 18/4, 20/4 from start to finish?
Setup. Lighting
5y ago
3
Solved
Hemposapien
How many watts per square foot must I have in a 2.7 x 2.7 x 6ft grow tent to fully flower 4 autoflower plants ( ideally Mephisto Genetics)?
Week 2
Setup. Lighting
6y ago
2
3
Solved
Drakkh
En qué mejora más watts de luz
En qué mejora que ponga 100w de LED a 30/40cm de las plantas a qué tenga 50w de LED a la misma distancia ? O por ejemplo con 400w de LED a 40/50cm crecerían x(2, 3, 4) veces más rápido?
Setup. Lighting
5y ago
4
1
Solved
Dazed_And_Confused
Grow Light for 3x3 tent
Looking for a good grow light for a 3x3 flower tent. -Price is not an issue -Low heat since I am venting into my living area. -Even light distribution. I plan on doing a SCROG so having the same light intensity on the edges as the center would be best.
Setup. Lighting
5y ago
7
Solved
Puffdamagikchillum
Lighting question
Will it hurt to run this giixer 110w led in a 32x32x63 tent with this Bestva 390w led? 2 plants one mainlined and one just lst in 1gal pots. What about the way its set up? Was only way it would go in! Height suggestions?? Thanks and Happy Growing
Week 4
Setup. Lighting
6y ago
2
2
Solved
Dopacks
2x viperspectra xs 1500 150watt ? Does the power of 2 lamps add up together?
Does it make sense to buy another Viperspectra xs1500 with 150watts? So my question is, if the power of 2 same led lamps add up together?
Setup. Lighting
4y ago
1
Solved
Ema26
What’s up guys me again😂 I’ve got my hps up and running and I’ve got the temperature under control by having my fan blowing directly at the light and I’ve added a oscillating tower fan. How can I keep the temps up when lights go off? Many thanks!
Other. Other
Setup. Lighting
Setup. Ventilation
6y ago
3
5
Solved
Brebzzz
Light
Should had ad other Light for flowering ?? Or this one will do the job ?
Week 6
Setup. Lighting
6y ago
1
2
Solved
BluesGrow
Light for God Father OG
48x48x80 vivosun grow tent. Recommendations for a light are needed. Currently, using three spider farmer sf 1000 daisy chained. Will be growing God Father OG for the next grow.
Setup. Lighting
5y ago
1
1
Solved
Pblc_10
Tipps, Beleuchtung, Mars Hydro, dimmer
Ich hab mir eine Mars Hydro Fc-evo 6500 geholt die jetzt kommt gibt's da was zu beachten oder hat jemand Tipps wie ihr eure Lampen eingestellt habt? Ich hab mir auch den iconnect geholt um das besser plan zu können aber ist halt meine erste dimmbare Lampe ✌️
Setup. Lighting
10mo ago
6
2
Solved
WeedSmeller
Which light for a newbie with limited height?
I only have 3ft of height to work with in my grow area. I have been looking at the 2x2ft and 2x3ft tents. Which light will give me the best quality buds? I've been looking at Mars Hydro and Spider Farmer.
Setup. Lighting
6y ago
2
2