4000k CRI 90 for veg?

I'm building a 4x4 LED Strip lighting for veg and trying to decide if I should do BE Gen 3 CRI 90 or 80.

Does the wider spectrum help in anyway with veg growth?

i believe the small amount of far red added would induce a little bit of stretch as compared to the 80cri but overall i would still go for the higher cri.

If you wanna veg fast id go for 90cri. If you sometimes miight need to keep plants in vegg extra time id go for 80cri.

Or just go for vestas, and have it all, vegg, full cycle and flower

I definitely don't want too much stretch. I am having a problem with stretch right now, but I'm using CMH lights which don't have much blue at all.

The 4k cri 90 have a very high blue range as well as the red, so would that keep them from stretching too much?

I am vegging for about 6 weeks, so that is a fair amount of time, but I tend to prune them down quite a bit.

I have a separate flower room, would the vestas be good for just the veg cycle?

I've just vegged under 5200k HPS.

No diffence to 4000k in my opinion

I'd say, although not an LED grower, dual spectrum all the way and far red LED added in mid flower

the 5700K 90cri eb3 looking nice too, they go the lowest blue wise.
theyre the the most sunlike out of the bunch.

tilopa said:

I definitely don't want too much stretch. I am having a problem with stretch right now, but I'm using CMH lights which don't have much blue at all.

The 4k cri 90 have a very high blue range as well as the red, so would that keep them from stretching too much?

I am vegging for about 6 weeks, so that is a fair amount of time, but I tend to prune them down quite a bit.

I have a separate flower room, would the vestas be good for just the veg cycle?

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Vestas have 2 channels, 5000k and 2700k in 90cri. Both in parallel makes the spectrum around 3700k 90cri, which is a nice full cycle spectrum. 5000k would be a good stretch inhibitor, 2700k a good stretch inducer and will flower really well. Or you can go for 2 drivers and do steppless spectrum tweaking. It would give you a chance to control your plants in vegg, indicas and sativas may need different spectrums in order to not over stretch.


Vesta Thrive, with extra blue around 430-440nm should be available later this year, might be something to wait for.

Thanks.

The 5700k 90cri are hard to get, in fact any of the EB3 90cri are hard to get. I have some of the 4000k 90s because future electronics sent me them by mistake. I was going to return them and get the 4000k 80s but I might just use them.

Rocket, the vestas sound good, but it feels a little complicated for me at the moment. I'll be looking for the vesta thrives when they come out. In the mean time I'm going to just use the 4000k 90cri.

oh yes, especially when you have the 4000k 90cri at hand, use them!
i would think they will veg you very nice plants.
not worth the troubble changing something.

could even be you wont see any difference using 80 or 90 cri in this case.

tilopa said:

I definitely don't want too much stretch. I am having a problem with stretch right now, but I'm using CMH lights which don't have much blue at all.

The 4k cri 90 have a very high blue range as well as the red, so would that keep them from stretching too much?

I am vegging for about 6 weeks, so that is a fair amount of time, but I tend to prune them down quite a bit.

I have a separate flower room, would the vestas be good for just the veg cycle?

Click to expand...

Im pretty sure you could pull of a decent flower with 4000k 90cri, the vesta 3700 spectrum was flowering indistinguishable from 3000k 80cri.
I say go for it, and keep your strips not permanently fixed on the heatsinks. If you get the vesta thrive you could run them in series with these as their currents aare more or less the same.

Rocket Soul said:

Im pretty sure you could pull of a decent flower with 4000k 90cri,

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Not sure if I'm following you, or there was a typo somewhere, but I will be using the 4000k 90cri for veg only. I'm assuming that would be ok?