PHOTOBIO incorporates cutting edge photobiology science into high-performance fixture designs that uniformly distribute photons to your plant canopy thanks to proprietary photon regulating optics. The various high-efficiency spectra employed in PHOTOBIO fixtures have been trialed extensively to elicit specific photomorphogenic responses in your crop. Their mission is quite simple: Develop only the best horticultural lighting solutions available allowing growers to maximize their crop’s potential for maximum profitability.
I just ordered 2 of these 25lb bags TO MY DOOR from HTG. Only cost $143. Why are the clowns at HB charging 3x pricing? I'll have to ask advanced Nutrients if they know about it.
Not the best, but it works well for some personal. I've had this for a few years and still works.