Getting a lot of messages about the additional spectrums available that are now back in stock. The 3500k cob is the full spectrum work horse. These additional cobs should be used in conjunction to an already lit space. Or if you have a dedicated veg or flower space.
2700k 90 cri is a deep red, similar to the spectrum in hps. It is best for flower or supplementing flower.
3000k 90cri also has a boost in red. Similar to the 3500k with a boost in red and a small decrease in blue.
6500k 80cri is unlike the rest. Very blue! This cob has very little red and a big boost in blue. I have seen it really boost the resin in plants at the end of their life. It’s also a great cob for seedlings and a veg boost to help keep plants shorter with less stretch.
The non technical part, I have flowered under 6500k and vegged under 2700k and didn’t see any grow changing differences. All these cobs will do well for any stage of growth.
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