CXB3590's, still the ticket?

It has been 4 or 5 months since I built my first lights for veg. Before I order some more for flower, I am curious if the CXB3590's are still the hot item? Given the speed at which technology changes, I figure I had better verify.

If I remember correctly, 3000K is the desired temperature for flowering, correct? CB's or BD's?

Yup nothing new just yet but most use 3500k and CD bins
Later in the year a new bin DB will be coming out. Most are not waiting though

GrumpyToker said:

Yup nothing new just yet but most use 3500k and CD bins
Later in the year a new bin DB will be coming out. Most are not waiting though

Click to expand...

Ah yes. I knew flowering ran at a different temperature than veg. I looked back on my threads and see that 4000-5000K lights were recommended for veg and I went with 4000K.

3500K CD's it is for flowering. Good thing I asked.... THANKS!

3000K and 3500K both work great for flowering. I haven't personally used 4000K, but I'd imagine it works equally well if not better.

I still want to see someone flower with cool whites just to see how it comes out.

That's really interesting on the 4000K churchhaze.

I'm going to speculate that the main advantage of the 4000K over the 3500 or 3000 would likely be down to pure photon count as it would have less photon loss due to less phosphor being used vs the lower K temps right?

Without seeing an absolute spectral distribution of the 4000K vs the 3500K (as opposed to the relative distribution in the Cree spec sheets) its hard to know how much of a hit the 4000K takes in the 595-628nm range for example. Or maybe it doesn't take a hit simply because it just puts out more photons total?

I know Spectrum King added reds to their base white because I've got their 400+ model in use here, but I'm not sure what that base K temp is? I seem to recall it was 4000K or perhaps it was 5000K... too much info here sometimes to memorise it all first time around for a noob to LEDs like me.

I've been pondering doing something similar myself... like going with 4000K for the higher photon count and adding in 630 monos to boost that part of the spectrum as it seems to be top of the McCree curve.

Has anyone had the CXB3590s tested with a radiospectrometer? It would be very cool to see total photon numbers as well as the spectral distribution for the bins we are interested in as growers.

Perhaps they are here on this forum somewhere, but in the last 2 months of reading as much as I can while I buy parts for my first DIY LED build, I haven't found it amongst the mountain of great info here yet.

Greengenes and Growmau5 were talking at the end of the first DIY Tech Talk about getting the 3500K into the Sylvania tool. Did that ever materialise guys? That would be so cool to be able to have a virtual play with that tool and see what happens using different base K temps and adding in various monos.