Quantum 600W Digital Ballast, 120/240V Dimmable 400watt Formulated for use with liquid

Formulated for use with liquid culture

Keep your plants productive and green with Cal-Mag

The 2 ft x 4 ft

reducing watt density and lowering the risk of scorching

Hole in center of cover measures 1/2 inch in diameter

Quantum 600W Digital Ballast, 120/240V Dimmable 400watt Formulated for use with liquidQuantum 600W Dimmable Ballast The Quantum Dimmable Ballast brings quality, efficiency, and high intensity illumination to your garden. With a Power Factor of 99. 9%a highly stable output frequencythe Quantum Dimmable ballast lets you run your lamps at the strength you need, allowing you to control your light spread. Rigorously engineered, it features a resin cased circuit board with a sealed bearing fan so it will run cooler than any other ballast and