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.
The average light bulb in a home gets around two hours of use per day. For an old-style 60W incandescent this would be 44 kWh/year. A halogen bulb can produce the same 700 lumens two hours per day for 31 kWh/year, but for a CFL that drops to just 9 kWh/year and for an LED just 6 kWh/year.