Perception
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I’d go with 3500k. I like a more white/blue spectrum and have had good results with it.
Back in the day when most were running HPS I was running a conversion bulb at around 4000k with great results vs the 2700k hps I had been running for years. But that’s me.
In fact I’d have no problems running upto 5000k and will be here shortly. It’s to supplement my vispar burples. If I was running just cobs and no burples I’d run as close to 4000k as I could. 3500k is the closest I’ve seen.
I got my lights from Timber after talking with @sixstring and Dan from Timber.Doing a little research here. Timber Grow Lights (where I plan to buy my cobs), recommends the following light intensity for Veg & flower:
-> VEG: ~500 µmol/m²s
-> FLOWER ~ 900-1000 µmol/m²s (after reducing to 12 hours a day)
So if the vegetative light intensity requirements are not as high, then maybe I should just opt for the 3000k flowering COB's, and just start turning them on right around the flip. Although I haven't found out what my LEC315 puts out yet in moles.
Kudos to @sixstring too! Pointed me right to the pro's. ;)I got my lights from Timber after talking with @sixstring and Dan from Timber.
Dan was really great at helping me decide which way to go after telling him what I wanted to do.Such a great company,you can't go wrong.
I got 2 Redwood VS COB fixtures at 3000k and I've never been happier.Stepped up my game so freaking much.
Very happy with my lights and kelvin choice. ;)
I got my lights from Timber after talking with @sixstring and Dan from Timber.
Dan was really great at helping me decide which way to go after telling him what I wanted to do.Such a great company,you can't go wrong.
I got 2 Redwood VS COB fixtures at 3000k and I've never been happier.Stepped up my game so freaking much.
Very happy with my lights and kelvin choice. ;)
I hear ya man,I have a 4x8 for flower only that's why I went with the 3000k. ;)I spoke with Dan at Timber as well. Very helpful!
At this point, I think I'm just gonna pick up the 3500k so that I can supplement in veg (even at a lower power with the COBs, since they are dimmable) to make sure that I get more even light coverage in corners.
From all the (sometimes confusing) research I've been doing, it looks like adding the 4x COBS (200w) to my LEC315 will be a great combo to hit that 900-1000 µmol/m²s on a 12/12 cycle.
If it's flower only I'd go 3000K or even 2700K. If you plan to veg some under those go 90cri 3500K
Nice,I'm using the Vero cobs.Thanks everyone for the feedback.
This is what I ordered:
Kudos to @sixstring too! Pointed me right to the pro's. ;)
I second that DDude. Thanks @sixstring for mentioning calling Timber. I called for QB’s talked to Dan about my 2X4X7 and he said QB’s would be fine but the long term testing results and feedback from farmers overwhelmingly said COB’s. I do think this could be since research on QB’s just isn’t there yet but either way can’t go wrong.
Again, San was awesome and I couldn’t be happier with my COB purchase. They are knowledgeable and very friendly.
Highly recommend.
I know i'm in the minority but my own testing has shown me personally that more blue / white spectrum helps keep them from stretching, creates firmer denser buds and imo increases resin production.
:)
Saving for some quantum boards. ;)I know i'm in the minority but my own testing has shown me personally that more blue / white spectrum helps keep them from stretching, creates firmer denser buds and imo increases resin production.
We did some testing years ago between a couple dozen or so of us on Cannabis World and all had similar results. It was quite eye opening as the general consensus was the red / orange spectrum helped them more in flowering. Our tests showed otherwise. We didn't take any real measurements, its was very crudely orchestrated but conclusive enough for us to make the switch from HPS to MH conversion bulbs that were in the 4-5k color temp range.
I say this because I know some are questioning why I'd give such a recommendation. I've seen it with my own eyes, in my own garden with strains I've known very well. But that's my experience anyhow.
Kudos on your new purchase. I know you'll do great with them :)
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