Understanding HID Bulbs
HID Bulb Comparisons
To learn more about HID lighting read our buyer's guide. HID Lighting Buyer's Guide. 750 watt grow light bulbs are unique in the hydroponics industry. Bridging the gap between 600w and 1000w grow lights, 750w lights allow growers to save money versus using a 1000w grow light, yet get yields that come very close to what a 1000w will produce. A 750w bulb's grow area is approximately 5' x 5' in the vegetative stage and 4' x 4' in the flowering stage.