the 600 would be the best choice for that space despite having to use mh conversion bulbs you could use a 1000 also but it will produce more heat so make sure you have good ventilation.
you will want an aircooled reflector whether it be a cooltube or regular air cooled reflector.
bejay Reviewed by bejay on . Switchable Ballast A friend asked me to clarify before making a purchase. 1. (I know it's a dumb question, but it's better to find out now than later.) Is a switchable ballast truly switchable or does it still require a conversion bulb when changing out? 2. What's the concensus on the 600W Galaxy Ballast? Is it reliable and as quiet as they say? 3. Is there a rundown on nutrient selection? The GH 3-part Micro/Grow/Bloom seems relatively straightforward, but what about the other things like KoolBloom, Rating: 5