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Back to Grow Questions
When to put the light on?
Panzora
started grow question 5y ago
Hey there, Do you need to put the light on the pots directly after you planted the seeds in the ground? Or do you need to wait untill they poke true the ground and then put the light on them?
Solved
Setup. Lighting
likes
Aquemini
answered grow question 5y ago
Plant can't absorb light till leaves open. But I leave the lights on anyway because I don't mind paying my electricity bill.
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Selected By The Grower
Similar Grow Questions
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
6y ago
4
4
Solved
Terp_Derp
Comparing My 2 LED lights
Light comparison. Ive got 4 plants in a 3x3 and am currently running the ViparSpectra V600 LED. I just got offered a MarsHydro TS1000 and Im not sure if it's an upgrade or downgrade. I've watched so many review videos and end up more confused. Should I run both?
Setup. Lighting
5y ago
2
2
Solved
Blubbiblubb
How to manage a tall plant with a thick stem in week 1 of flowering?
One plant I ordered online was pre-grown. Now, it’s about 20 cm taller than my other plants. At the top, the taller plant gets more than 1000 PPFD, while the lower canopy gets about 500 PPFD. It’s currently week 1 of flowering. The stem is too thick to bend down.What would youdo?
Plant. Too tall
Setup. Lighting
2y ago
5
7
Solved
Greenbean420
LED vs HPS - heat output
Hey - Does anyone know if theres any difference in the heat output LED vs HPS I currently have lumii black ballast dimmable 600w, however im using it at 250w and its usually always 27-31c in the tent. Im looking at buying the Mars Hydro TS3000 LED, or is it not worth it? Thanks
Other. Other
Setup. Lighting
4y ago
9
9
Solved
2x2growing
Bar style leds
Anyone using bar style leds? What’s the closets you’ve grown your plants and what was your light %. I have plants that are 5” from the light. Really don’t want to super crop them in flower but seems like I may have to:/
Setup. Lighting
4y ago
1
1
Solved
Screwie
Distance of light from seedlings
Lost leaflet the light came with so I need to know what distance the Mars Hydro 300W (item MH-300-60LED) should be away from my seedlings. Can anyone help pls? I scoured the web but the leaflet is not listed. Thanks!
Setup. Lighting
5y ago
4
5
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
EL_CHAPO_420
LIGHT HEIGHT / INTENSITY?
IS IT BETTER TO HAVE THE LIGHT INTENSITY LOWER AND THE LIGHTS LOWER OR HAVE THE INTENSITY AT 100% AND RAISE THE LIGHT?
Setup. Lighting
3y ago
1
1
Solved
Boncoward
Should I add more light?
I have another spider farmer sf1000 light, should I add it into my 4x2 tent.
Setup. Lighting
25d ago
3
2
Solved
Alabham
Is 500 ppfd on new seedlings ok?
My light dimmer only lowers to 500 ppfd. I’m starting autoflower seedlings in a space tote before I move them into my perpetual harvest tent. I’m currently propping the light on its side so that the indirect light only hits around 300-400, as an attempt to reduce light bleaching.
Setup. Lighting
5y ago
2
2
Solved
Mosquito_Haarlem
Daylight or LED?
Next week will be cloudy. Should I put her under a 600w led or is daylight better for her?
Week 3
Setup. Lighting
6y ago
3
2
Solved
ITAIvangrower
Sonlight apollo 8 plus box 80x80x160
Buonasera a tutti growers, vorrei sapere ho intenzione di comprare questa lampada, ho trovato un affare da un amico attualmente ho un box 80x80x160cm con un hps 250 ma non sono molto soddisfatto e vorrei passare a una sonlight apollo 8 plus vi metto il link, grazie in anticipo 🙏https://www.idroponica.it/led-coltivazione-indoor-sonlight-apollo-plus-8~27322.h
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Setup. Lighting
6y ago
1
3
Solved
jihun
Luma or marshydro fc
Hi Guys,What do you think that of 2 different lights?1. Lumatek Zeus series2. MarsHydrio FC seriesWhich is the better? ( or other hq led)I know the Mars is better price,but i would like to know which is the better in real life ? (No price to value to ratio,real experience.
Setup. Lighting
3y ago
1
4
Solved
GreenHillZone
Autoflower light cycles - adjusting mid grow
Autoflowers can grow in pretty much any light cycle. What are your experiences with changing light cycles mid grow? I am currently around Day 24, running 20/4 but the humidity in my grow cabinet at lights off is very high. How would adjusting to 24/0 affect my plants now? Thanks!
Setup. Lighting
5y ago
1
1
Solved
Jaxx_Teller
Power and distance
Ok so...... This is a Mars Hydro TSW2000 specific question. 1, When should i go 100% with the light as far as plant age is concerned? 2, I've seen various distance tables that all vary so i'm asking TSW2000 growers specifically what their distances are for Autos. Many thanks
Week 5
Setup. Lighting
6y ago
2
4
Solved
Marcos8matos
Window light is enough?
If I have a window with a good amount of light entering everyday is it sufficient for the plants?
Setup. Lighting
5y ago
4
3
Solved
Grow4Releaf
Side lights ?
Would my plants benefit from these extra lights hanged to the side? Photos included of light and how they look. Above are two SF1000D lights. Curious if these will help the under growth or if it's just a waste? Thanks for any info anyone can share . Happy growing!
Setup. Lighting
Setup. Other
Techniques. Other
4y ago
4
4
Solved
Natural_Medicine
Need help on the use of mars hydro ts1000 (first grow first use)
Now i use 25% of light on Marshydro ts1000 (30cm lamp to plant) should i change to 50% at this growth or i need to wait for a few days. If yes what distance should i go for. If no when is the right time, now is 9 days old (auto)(picture below)
Week 1
Setup. Lighting
6y ago
13
2
Solved
romi27
Lighting coverage
Will my viparspectra xs1500 have enough coverage once these plants get larger? Or will I need supplemental lighting? And if I do need more, am I better off getting the larger model, or just getting another identical unit so that I have 2?
Week 4
Setup. Lighting
5y ago
2
2
Solved
Zappdoggy
Light Science
Has anyone watched some Youtube videos by Dr Bruce Bugbee from Apogee Instruments? I find his lectures on lighting to be the most straight forward explanations I have heard yet. I found his vid called "The New 400-750 nm ePAR Range Explained with Dr. Bruce Bugbee" to be eye opening on lighting colours. I have changed my LED's based on a few of his vids. He e
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Setup. Lighting
4y ago
5
3