Method Seven EVOLUTION HPSx TRANSITIONMethod Seven designs high quality glasses and photo filters for indoor and outdoor growing environments. Our grow room glasses provide true color in bright lighting and are optimized for each of the standard grow lighting spectrums. Lens Technology Experience balanced color, comfort, and protection, wherever the day takes you. The HPSx lens is a proprietary polymer blend that transitions from signature blue HPS color balancing technology to dark grey