Flowering under 2700k Crees

Has anyone finished a grow under some 2700k cree cobs? I see they are hitting the market now and am thinking about adding one to my new design.

I'm currently using two 3000k cxa 3070 ABs and am possibly getting a larger area to work in (18" x 36") where I could go with three cobs. A cxa 3590 2700k is available in a bin that matches my current cobs output and if they add some punch to flowering I might stick it in the middle.

grouch said:

Has anyone finished a grow under some 2700k cree cobs? I see they are hitting the market now and am thinking about adding one to my new design.

I'm currently using two 3000k cxa 3070 ABs and am possibly getting a larger area to work in (18" x 36") where I could go with three cobs. A cxa 3590 2700k is available in a bin that matches my current cobs output and if they add some punch to flowering I might stick it in the middle.

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People seem to actully be moving toward higher spectrums.
I see 3000k 3500K and 4000K being the most common now.
I have 3000K cxa3070s and might add some 3500K in either cxb3070 or 3590

I've always thought the move towards the higher Kelvins was to gain efficiency. I have a handle on heat and don't mind the little cost of running more power to them. I'm more curious if it provides different bud structure or benefits by having stronger red. I like the buds my 3000k grows but they get a good amount of sugar leaves compared to pics I've seen from hps buds. I don't mind less than perfect efficiency if it gets me what I want. I also understand genetics has much to do with it as well.

I plan on a three plant rotation with modular scrogs. Maybe start them in flower when the 12"x18" screen is full under one 3000k, move them under the 2700k after three weeks and then finish them under the other 3000k for the remaining 3 weeks. Using the lights with the higher temp to control "the stretch" and frost them up a little at the end. I have a separate veg area so it can stay perpetual.

grouch said:

I plan on a three plant rotation with modular scrogs. Maybe start them in flower when the 12"x18" screen is full under one 3000k, move them under the 2700k after three weeks and then finish them under the other 3000k for the remaining 3 weeks. Using the lights with the higher temp to control "the stretch" and frost them up a little at the end. I have a separate veg area so it can stay perpetual.

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I am new to LED lights, and just basing my info on lots of reading from growers with great looking crops.
The best thing to do is get more replies and/or just experiment to see first hand.

Kingbrite recently got a few Cree CXB3590 2700K 36V CB bin, might be worth mixing in with the other color temps for an experimental flowering lamp?

You can check out my micro cab thread for a grow with 2700k. It's in there somewhere.

I also used it in the last party cup thread, not the current one. There's pics spread out in there and my main diy thread.

What it did for me.... Nice flowering, definitely different than 3000k. The only downside was it made the plants grow more loosely structured than a cooler Kelvin. Not quite as dense a flower.

Haven't done a mix with them yet, not a cob mix at least. Picos bridgelux thread shows a 2700k mixed with a cooler Kelvin I think.

Has cree released a spectrum graph for the 2700k on any cob datasheets? I've only seen the 3000k, 4000k and 5000k.