Samsung QB, what colour temperature?

I tried to google what will be a good temperature for these boards to do a full cycle(vegging and flowering) but there are so many different opinions.

Some people say 3000K is good for both and other say 4000K is good for both.

Can somebody share their knowledge about 3000K, 3500K and 4000K in relation to these boards. What are these good for?

I believe I read somewhere that they asked HLG and they replied that 4000K is good for both vegging and flowering.

I run 6x 3000k 288s in my tent and a 4000k 120 over clones. The difference in colour is visually noticeable, but I'd argue that it's a negligible difference in height.

If you're growing in a 2 tiered cupboard and height is a serious concern then get 4000k, otherwise get the warmer 3000k.

For a single spectrum for seed to harvest, 3000k would be my choice. Has plenty of blue and red for both growth stages.

PinPin said:

Some people say 3000K is good for both and other say 4000K is good for both.

Click to expand...

I also saw a lot of both of these recommendations so I just went with all 3500k boards for full cycle.

i have a 3000k, and it has done great in the veg

I used 3000k seed to harvest last run and it did an excellent job.

im about to find out how good it flowers pretty soon, im looking forward to it for sure

This is from the 3000k seed to harvest run.

Thanks guys. So basically both 3000K and 4000K will work for full cycle.
NanoGadet, what a great bud!

I have been just offered 3 sets each with two QB288 LM561C boards(250W in total per set) for less than $520 USD and that's including shipping cost from China.

That's 750W in total at the highest output. It is by KingBrite from Alibaba. Much cheaper than HGL 550 and 50% more powerfull at the same time.

If I can get rid of some of my Viparspectra lights I would definitely buy QB ones instead.

Can you please tell me how much heat they produce specifying what QB you have.

My four viparspectra lights(3x600W and one 1200W) when they are all on raising a temperature in my cabinet by +10C +15C during lights on cycle. I have read that heatsink for QB can go up to +85C but it does not really tell me how it affects grow environment.

Let's say I have about 150 cubic feet of a space. Will these three QB sets(with 6 LM561C boards in total) be better in that space in terms of keeping the cabinet space cooler?

No, that's the price for the whole light assembled. Two QB 288 LM561C boards on one heatsink with a driver and all wires and hungers. One set is $131.39 USD

https://www.alibaba.com/product-detail/KingBrite-quantum-board-for-250W-grow_60810864436.html?spm=a2700.7724838.2017115.1.8b424b78u1oaha

They have a table down below(as an image) on their product page. I will put it below. Mine is 250W.
As for the colours they offer quite a huge range 27000K/3000K/3500K/4000K/5000K/6500K

Its a kit you have to put together yourself. There's even instructions on how to do it on their add. The boards will probably be screwed to the heatsinks, but nothing more than that.

That's ok, even it it is not assembled I can do it myself.

3000 here