LEDgardener

Pity they don't say how much red they added.

Aloha & here is more research .https://www.plantgrower.org/uploads/6/5 ... XF01CR0LTY

Does anyone have the spec sheet for the HLG red strips? I was wondering about the red to far red ratios?https://horticulturelightinggroup.com/c ... ntum-board

Dr. Runkle & MSU research.

Marine2143 wrote: ↑

Sun Mar 17, 2019 5:42 pm

Does anyone have the spec sheet for the HLG red strips? I was wondering about the red to far red ratios?https://horticulturelightinggroup.com/c ... ntum-board

No spec sheets here, but stephen (hlg) told me the 18/35s have 2x(4x630nm, 3x660, 2x730)...i use 1 of them per 2x288

Aloha & So the ratio of red to far red is 4.5 to one?

Marine2143 wrote: ↑

Sun Jun 23, 2019 4:44 pm

Aloha & So the ratio of red to far red is 4.5 to one?

Hi there,

In the case of the 18/35s it’s 4 far red to 6 deep red to 8 red, but also need to consider the red spectrum of your main lights (eg 3000k 288s have a big chunk of red and deep red in them already), cuz the ratios do matter (it’s how i decided to use one 18/35 to two 3000k 288’s ; course i had to round up/down because i don't control the diode counts in the bds); @random blame could probably help, if he has time, but, if you haven't read the following thread, reading it will help you a lot (yep it’s long, and has a bunch of useless posts, but totally worth reading):
https://www.rollitup.org/t/the-far-red-thread.867665/

Aloha & I tend to get my research from WUR, Ohio State, Cornell, Utah State, ,and the University of Arizona. So we have 22% 730nm,44% 660nm, % 33% 620 nm? Plus any white with red with 6.5K for high blue and 3k for low blue.