Lumatek Dimmable 600w Digital Ballasts are a great choice for your hydroponics garden, offering so much control with your light from one ballast.
Lumatek dimmable digital ballasts have four settings to control the light output from the ballast, 360w, 400w and 600w settings for MH and HPS lamps and also a super lumen switch which can only be used with an HPS lamp.
We recommend using a 400w MH lamp with the 400w setting on the ballast for growing your plants and then change your lamp to a 600w HPS and the setting to 600w for flowering or fruiting your plants. The super lumen switch can also be used in the last few weeks to help boost your plants.