Driver for my qb

[WhiteRecluse]

Both are pretty close. Although they are wired completely different. Parrallel or series. The constant voltage drivers generally put out a little more mA. In the example you listed the 240-48 would put out about 2.5 amps per board. If you are using a ~50v board you should get max available watts for that driver, if using the c2100 you might not get max depending on how many volts it actually runs at for that current

[Hydrofood]

This has been well documented and even lab tested. Mixing spectrums of white LEDs with the same CRI results in the mean spectrum being dominant.
To each their own

(on other thread someone was writting me that is no sense to mix 1:1 as its the same as 3500k, but 4000k has more blue so plants could grow a bit more i guess )

[psyweed]

This has been well documented and even lab tested. Mixing spectrums of white LEDs with the same CRI results in the mean spectrum being dominant.
To each their own

(on other thread someone was writting me that is no sense to mix 1:1 as its the same as 3500k, but 4000k has more blue so plants could grow a bit more i guess )

Thanks for confirming - so what should i order then? 3500k? as it has more blue then 3000k
Now i have mother plans under 4000k LM561C panel and seem the growth is fine.

To the 6xQB panel ill be adding 6 strips (mix 660nm + 730nm 4:1 ratio Dimension: L286xW27x1.6MM)
Is the Ratio fine?

Thanks

[WhiteRecluse]

What Hydro is saying is that mixing spectrums 500k one way or another has been scientifically proven to not effect yield or overall plant growth one way or another. When using LEDs of the same CRI and the same Phosphor coating technology there are no real benefits of mixing spectrums.

That being said I have a buddy who is dead set it will have an impact and he refuses to see reason. That is fine, mixing spectrums will cause nothing adverse. Mix away if you feel strongly about it.

Having separate lighting for veg and for flower would show what you are looking for. Having 5k+ veg lights and say 2700 for flower should net a palpable difference. But you have to buy more lights to accomplish this. Cost goes up but penetration, efficiency remain the same. Therefore the average ROI goes down. Adding lights for the sake of increasing umol/j would make ROI got up over time.

[psyweed]

ok got it....

I dont plan to do 5000k mixing + 2700 panels.

So lets suggest what to order
1. 3000k or 3500k? for whole round (veg/flowering)
2. for Mother plants only 4000k or 5000k?
3. 660/730nm chips one day china supplier tells me 12usd for strip with like 48chips, next day is problem to produce (drives me mad ). Hopefully they supply something if not - would be ok to be without it?
4. Or other seller has some 660nm directly on 3000k 288x board, so i dont have to mess with 3rd driver and strips

sorry that we go bit off with the "driver"

Thanks a lot guys for your patience

[WhiteRecluse]

Every one of those questions are a matter of preference. For instance, I prefer 3500 for all around. I like the node stacking and can generally attain similar heights between indicas and sativa's in mixed grows. Most of the industry seems to have gravitated to 3k for all around.

[psyweed]

thanks man for all your tips and help...

i reduce my "needs" with 3000/4000k mix and decided to take 3500k + (288PCS LM301B+6PCS XPE660nm+2PCS XPE730nm), as they have long time to produce mix
https://www.alibaba.com/product-detail/ ... 56485.html


Then they told me 3500k also not available now, just 3000k or 4000k

Other seller option is 3500k White + Epistar 660nm (252 white + 36pcs 660nm), but seems like Epistar is more cheap or less lummen thats why they are using more of them.

Its really frustrating to deal with them as each seller has one thing , but missing other and long produce times

----

What about those mother plans panel? 4000k or go for 5000k?

cheers

[psyweed]

boards are clear now...

Found really good video series "The LEDG Guide to Mean Well HLG Drivers"
over herehttps://www.youtube.com/channel/UCrXV02 ... q1g/videos

one issue what im thinking about:

for the 2xQB set is suggested
1. Meanwell HLG-240H-54B for parallel
2. Meanwell HLG-240H-C2100B for series

In the video he mention it might be better if you want to power only 1pc QB from 2pc to use HLG-240H-54B, volts on QB should be around 54V and QB shouldnt exceed max current of QB.

Did i understand it right? that lets say in tent i dont have enough plants so i turn on only 1xQB and in case i have more i will turn 2x QB - on the same driver.

If not how to reach this solution or i need to use 2 separate drivers?