How many watts for a 2x4 growspace

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Newbie27

Newbie27

It's like all I ever seen people use on YouTube lately is mostly Mars so it gives a feeling that maybe they are good but id rather get actual opinions than just goin ohh everyone uses those they must be the best lol
They get em free whenever they say sponsor equal free aslong as u do a good review u can keep it so people keep the tent n get ride of the light n a giveaway hints more vids
 
MIGrampaUSA

MIGrampaUSA

It's like all I ever seen people use on YouTube lately is mostly Mars so it gives a feeling that maybe they are good but id rather get actual opinions than just goin ohh everyone uses those they must be the best lol
If it were me, I would look at grow lights that have the Samsung LM301b or H LED chip. I don't own a Mars but I have heard that the Samsung LED is more efficient. Those chips are also in bar lights which makes for another option ... if you are the DIY kind of guy, you can buy the pieces and build your own.
 
Newbie27

Newbie27

If it were me, I would look at grow lights that have the Samsung LM301b or H LED chip. I don't own a Mars but I have heard that the Samsung LED is more efficient. Those chips are also in bar lights which makes for another option ... if you are the DIY kind of guy, you can buy the pieces and build your own.
I was checking into that yesterday its just hard bcuz once you read the reviews on any led light u see negative comment thats makes u keep looking
 
Aqua Man

Aqua Man

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Off to bed... this old turd needs his sleep. But yeah you probably wanna get more light to them in flower.

Over the other option is run auto because you can run them 18/6 to 24/0 giving them less intensity for a longer duration... something you can't do with photos. A lot of people miss that fact. If going from 18/6 to 12/12 you need to give them 1/3 more intensity just to give them the same amount of total light per day. So with an auto you can get away with 15-20w per sq ft... unlike a photoperiod. Its all about the DLI (DAILY LIGHT INTEGRAL) can Google if ya like. I need some beauty rest.
 
Newbie27

Newbie27

Off to bed... this old turd needs his sleep. But yeah you probably wanna get more light to them in flower.

Over the other option is run auto because you can run them 18/6 to 24/0 giving them less intensity for a longer duration... something you can't do with photos. A lot of people miss that fact. If going from 18/6 to 12/12 you need to give them 1/3 more intensity just to give them the same amount of total light per day. So with an auto you can get away with 15-20w per sq ft... unlike a photoperiod. Its all about the DLI (DAILY LIGHT INTEGRAL) can Google if ya like. I need some beauty rest.
Thanks take it easy bruv
 
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