Since its my first grow I thought that a 430 watt would give me a little bit more room for error. I know I could easily fry my ladies with either lamp but the 1000 would do it much faster plus I wasnt sure how much heat these things put off. So I figured for a first light it was going to be ok. 430 Sun System with the large reflector and a Son Agro bulb. I will also be changing the bulb to the Hortilux. Not sure how many hours were on this lamp since its second hand...but still excellent shape. Should have everything up and running by Thursday. Then I will work on an exhaust system for the room.