1 One Foot: an Ollie where the front foot is kicked forward over the nose of the board. 2  Ollie North: Another name for the ollie one foot.  Boned Ollie: an ollie where the board is dipped down and the legs are practically horizontal, like a Melon Grab but without the skateboarder actually grabbing the skateboard.
Watts per square foot. The average LED grow light draws about 32 watts to cover 1 sq ft for flowering cannabis. Compare this to a typical HID fixture which rings in at 40 watts per square foot (assuming a 5â x 5â area, or 25 sq ft coverage area). Using an HID in a 4â x 4â will bring the power coverage up to 62.5 watts per sq ft.
To ensure that LEDs function properly, the driver converts AC line power (120V or 277V) to the appropriate DC voltage (most commonly 12V DC or 24V DC) or regulates the current (most commonly 350 or 700 milliamps or mA) for your lights. LED light drivers might also include components to make them dimmable.