Is this enough light too keep plants in veg.

waterproof808

Well-Known Member
I use regular 12w LED bulbs to keep my plants in Veg outdoors. Lights come on at sunset and go till 12pm. I’ve never grown an auto but it works like a charm on photo plants, many outdoor Hawaii growers veg this way.
 

Bud man 43

Well-Known Member
Cannabis is very sensitive to breaks in uninterrupted light during flowering.
It does not take a very bright light to put the plant back in veg. but it must be in the absorption spectrum.
Moonlight is low spectrum, around 400 nm and has an extremely low energy level which does not effect the flowering.
The low spectrum is not an absorpotion spectrum. The moon cannot give off an absorption spectrum.
 

pegboy

Well-Known Member
Don't buy a lux meter. Buy a par meter if you want to have an accurate reading. Phone apps are garbage.
I've got "PPFD Meter" on Android that works pretty well on my Motorola phone. Pretty close to what the Factory readings are on my lights. Within 20-50 ppfd. The trick is to hit the start button after the phone is positioned under the lights every time. I suppose it depends on the particular phone you're using.

Edit: My old phone was 100ppfd off from factory light specs,
 
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athlete420

Member
I use regular 12w LED bulbs to keep my plants in Veg outdoors. Lights come on at sunset and go till 12pm. I’ve never grown an auto but it works like a charm on photo plants, many outdoor Hawaii growers veg this way.
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This is a 20watt LED outdoor light. This is the amount of light it goes all night after sun down. Do you think this 20 watt would be enough too keep them in veg for another month or so
 

John Rollwan

Well-Known Member
View attachment 5253127

This is a 20watt LED outdoor light. This is the amount of light it goes all night after sun down. Do you think this 20 watt would be enough too keep them in veg for another month or so
I would say yes it will keep them in veg indefinitely if they’re photos. The people who said it’s not about light intensity, but length of light fading are correct. They’ll achieve almost no growth in these hours but in my experience as long as you don’t shorten the hours of light, you won’t signal flowering time.
 

John Rollwan

Well-Known Member
Cannabis is very sensitive to breaks in uninterrupted light during flowering.
It does not take a very bright light to put the plant back in veg. but it must be in the absorption spectrum.
Moonlight is low spectrum, around 400 nm and has an extremely low energy level which does not effect the flowering.
The low spectrum is not an absorpotion spectrum. The moon cannot give off an absorption spectrum.
But if we can put some plants on the moon… that space sunlight no atmosphere… bring 300 days of O2 and get some space weed.

…..boutta pound….
 

athlete420

Member
It will be fine preventing flowering. I run 1 led house bulb in a 10x20 greenhouse from sundown till 12. No flowers.
Thanks mate I will update everyone in weeks too come the result. Probably veg for 5 more weeks let them get massive they are about too be moved from coco in the small pots up too 30 litre pots, coco, they should explode full sunlight in coco they grow so fast
 

athlete420

Member
A few garage type spot lights at a nice 5000k or higher should do the trick....so about 75 watts
Yeah it seems too be working atm I'll update soon with pics, going too shadecloth a area for the girls go for 4 pounds in 25l coco with extended days so can get them too veg as days are short outside atm.

Will have airflow and heater in there too help them through the cold
 

athlete420

Member
Probably keep led t5s along the top edges of the rectangle enclosure for night time greenhouse and it should look really clean hopefully and waterproof
 
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