3000k vs 4000k

hi guys
im building 2 light setups with the q288 v2 boards
1 that wil run 4 boards at 2.1amp or 107W each board total 428W

2 will run 6 boards at 1.4amp or 67W each board total 402w

what lights should i use? im doing sog runs so 1 week veg and i flower
so i need the light to be for both veg and flower

i was thinking on doing with setup 1
2 4000k and 2 3000k

and in setup 2
2 rows of 2 4000k and 1 row of 2 3000k in the middle


how do you think 4000k will do in flower?

Do all 3500 with a few 3K. 4K is great for veg but not so much for flower. I built a light using all 6 3500 & 2 4000 and wish I'd used 3000 instead.

If you're vegging for one week and flowering for eight, use the light that's best for flowering - 3000K. In fact, 3000K will veg faster than 4000K too. Lots of scientific studies have shown that added red (around 620nm) promotes faster growth and higher leaf mass in veg as well as flowering. The only downside is it also promotes slightly elongated nodes - which you'll hardly notice during one week of veg.

^^^ this
I have both the 3k and the 4k in my room. The 4k does produce a better structure in veg but it suffers in flower. The 3k does a good job from seed to flower.

Airwalker16 said:

Do all 3500 with a few 3K. 4K is great for veg but not so much for flower. I built a light using all 6 3500 & 2 4000 and wish I'd used 3000 instead.

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the v2 has only 3000k and 4000k

Prawn Connery said:

If you're vegging for one week and flowering for eight, use the light that's best for flowering - 3000K. In fact, 3000K will veg faster than 4000K too. Lots of scientific studies have shown that added red (around 620nm) promotes faster growth and higher leaf mass in veg as well as flowering. The only downside is it also promotes slightly elongated nodes - which you'll hardly notice during one week of veg.

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GBAUTO said:

^^^ this
I have both the 3k and the 4k in my room. The 4k does produce a better structure in veg but it suffers in flower. The 3k does a good job from seed to flower.

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ye so looks like ill do 3000k for all thx for opinions

but i think i sew 1 guys her that did flower in 4000k only i cant find it

le0n2009 said:

the v2 has only 3000k and 4000k


ye so looks like ill do 3000k for all thx for opinions

but i think i sew 1 guys her that did flower in 4000k only i cant find it

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love how every led light growers uses the term "Lots of scientific studies have shown" fuck all studies have shown fuck all about leds its just a bunch of shit from people that make them lol

rob333 said:

love how every led light growers uses the term "Lots of scientific studies have shown" fuck all studies have shown fuck all about leds its just a bunch of shit from people that make them lol

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whole heap of graphs the prove nothing

rob333 said:

love how every led light growers uses the term "Lots of scientific studies have shown" fuck all studies have shown fuck all about leds its just a bunch of shit from people that make them lol

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Firstly, I didn't mention LEDs.

Secondly, did mummy not give you enough attention? Is that why you have to quote your own posts?

Plenty more like this, sunshine - this one isn't even strictly "scientific". Mind you, you have to be able to read to know where to find and interpret scientific tests.

You failed the first qualification by not even being able to read my post properly . . .

A bit beyond the numpties, but for anyone else this makes interesting reading. Also, no mention of LEDs.

https://www.researchgate.net/publication/233965860_INFLUENCE_OF_LIGHT_WAVELENGTHS_ON_GROWTH_OF_TOMATO

rob333 said:

love how every led light growers uses the term "Lots of scientific studies have shown" fuck all studies have shown fuck all about leds its just a bunch of shit from people that make them lol

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so what do you think? should i try the 4000k too?

le0n2009 said:

so what do you think? should i try the 4000k too?

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a hps or a cmh would be 10-15x better and u will save yourself bout 800 bucks

Prawn Connery said:

Firstly, I didn't mention LEDs.

Secondly, did mummy not give you enough attention? Is that why you have to quote your own posts?

Plenty more like this, sunshine - this one isn't even strictly "scientific". Mind you, you have to be able to read to know where to find and interpret scientific tests.

You failed the first qualification by not even being able to read my post properly . . .

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no not at all did you "If you're vegging for one week and flowering for eight, use the light that's best for flowering - 3000K. In fact, 3000K will veg faster than 4000K too. Lots of scientific studies have shown that added red (around 620nm) promotes faster growth and higher leaf mass in veg as well as flowering" mate if i wanted to watch a guy grow shitty plants with leds i will go to grasscity thanks

I'd go with 3000k

rob333 said:

a hps or a cmh would be 10-15x better and u will save yourself bout 800 bucks

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i growing ilegali so more heat more electricity to cool down = less light cuz of the ac
i pull from 400W led the same amount i pull from 600W with much less heat and less Wattg
and i have 100cm for each setup remove the pot hight so about 80cm total so led is fitting good

rob333 said:

a hps or a cmh would be 10-15x better and u will save yourself bout 800 bucks

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No one takes you seriously when you say nonsense like this.

rob333 said:

no not at all did you "If you're vegging for one week and flowering for eight, use the light that's best for flowering - 3000K. In fact, 3000K will veg faster than 4000K too. Lots of scientific studies have shown that added red (around 620nm) promotes faster growth and higher leaf mass in veg as well as flowering" mate if i wanted to watch a guy grow shitty plants with leds i will go to grasscity thanks

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You're a fuckwit. These two 400W stations produced 22oz and 24oz in 8 weeks. That's 800W of 3000K LEDs that produced over 1.6 grams per watt.

And in case you were wondering, that's exactly the same yield the rest of the stations with 600W HPS lamps have been producing in the same room. Same yield, 2/3 the wattage.

Oh yeah, and what about the 400W 3000K LEDs in my other room? 16oz dried and trimmed under 200W for these 11-week strains. 8-week strains also averaging 24oz per 400W.

Now where are your "shitty plants"? Yeah, just as I thought . . .

le0n2009 said:

so what do you think? should i try the 4000k too?

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I will let you make up your own mind about the person who posted. But suffice it to say, he doesn't know anything about LEDs, is an amateur grower, and likes to pop into the LED forum every now and then to flex his intellectual disability.

As you can see, I've put my money where my mouth is: I use 3000K to flower. Indeed, the panels in the first photos are half CRI 90 3000K chips which produce more 620-660nm light than the usual CRI 80.

Prawn Connery said:

Oh yeah, and what about the 400W 3000K LEDs in my other room? 16oz dried and trimmed under 200W for these 11-week strains. 8-week strains also averaging 24oz per 400W.

Now where are your "shitty plants"? Yeah, just as I thought . . .

View attachment 4204967

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Nice looking buds! What do you feed those girls?

Prawn Connery said:

he doesn't know anything about LEDs, is an amateur grower, and likes to pop into the LED forum every now and then to flex his intellectual disability.

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Does a name or term exist for something that is so below pc you should not laugh at it.. but do?. ''Spacktard'' done it for me.