The GrowTronicsTM SunKing is designed for the professional grower who wants to grow high quality plants like tomatoes, cucumbers or cannabis. Each fixture has a coverage of 7.75sqft. With a single well balanced spectrum there is no need for another light. SunKing replaces up to 1,200W of high pressure sodium. The GrowTronicsTM SunKing is designed for the professional grower who wants to grow high quality plants like tomatoes, cucumbers or cannabis. Each fixture has a coverage of 7.75sqft. With a single well balanced spectrum there is no need for another light. SunKing replaces up to 1,200W of high pressure sodium.