This is my first time posting, I hope the community is good. I'm a totally new grower, I've watched videos read and read on miles researched, so on. But I've been wondering If I had a metal halide and High-pressure sodium light would I need ballasts for each of them or not? And question two would I need a different ballast if I was to change the lights from 250 W to 400W to 600 W , so on. Or how is it?