hey guys i was wondering how this ballast works i understand that you can switch between both bulbs but what if i want to run them simultaneously??? can i ? or i have to use one at a time? my concern is i want a bulb in each room 1 for veg another for flower? im tying figure out if i only need to purchase 1 ballast or 2 ? any help will be recognized + rep
with a switchable ballast you can only run one light at a time. you will need 2 ballasts .. i have a nice 1000w digital hps ballast for flowering and Mh/Hps combo for veg.. it works out well.