Yes HLG B Spec has more Blue for Veg (Kinda like MH), R Spec has more Red for Flower. I'm a newbie so I can't tell you much more. I'm sure you can just get 35000k for full cycle but I would rather have a dedicated Veg/Flower lights imo.
You can allways buy a flowering light and add a couple of blue strips on a dedicated dimmer. Pretty sure the R-spec would veg fine as well, its based on 4000k white.
You can allways buy a flowering light and add a couple of blue strips on a dedicated dimmer. Pretty sure the R-spec would veg fine as well, its based on 4000k white.