What makes Digital Ballasts effective? What benefits do they hold over Magnetic ballasts? What Features to Look for? Today on Lex’s World we tackle these common Cannabis grower questions. The item featured in the video is a 600W Lumatek HID Ballast (3rd generation I believe)…I do recommend this as a terrific ballast if you are looking to get high quality, but it's more expensive. Happy Horticulture!