The Cool Tube Digital system comes complete with a 19 inch Cool Tube reflector, Phantom dimmable digital ballast and an ordinary HPS bulb. The 250W and 400W Phantom ballast don’t seem to be dimmable. Handiest the 600W and 1000W models are dimmable.
Great quality Hydrofarm product.
No want to worry about imported knockoffs, because all merchandise are subsidized by Hydrofarm’s manufacturer warranty.
Design means that you can position your lamp very as regards to your plants
Ballast features silent operation, lightweight design, more than one placement options
Triple surface aluminum fins makes this the most productive cooling in its class