The Interlux 600 Watt MH Pulse Start Grow Light Bulb is a high output lamp that will have your plants growing fast, lush and strong. It has a color spectrum heavy in bluish light, making it ideal for vegging and maximizing growth.

What is the difference between a pulse start MH and a regular MH?

Pulse start bulbs are more efficient and last longer, but they do cost a bit more.

Traditional MH bulbs start up by creating a small discharge between electrodes inside the arc tube. Every time this happens, tungsten sputters from the electrodes, which can blacken the walls of the arc tube and reduce the performance of the bulb.

Pulse start bulbs use an igniter instead. Not having the electrode inside the arc tube means less seal is required at the base of the bulb and heat loss is reduced. It also reduces tungsten sputtering, which increases lamp life, decreases warm-up time and decreases the deterioration in output over time (more info ).

Check out the regular if you don't need a pulse start bulb.

Features of the Interlux Pulse Start MH 600 Watt Grow Bulb

• Huge output: powerful light means strong, lush growth
• Flowering spectrum: heavy in blue-violet light for monster growth
• Electronic first: this bulb was designed to work with electronic ballasts
• Standard e39 base: fits any standard HID grow light reflector
• 1 Year warranty: makes this a risk-free purchase