@Jbiscuitwithgravy, Week 1 I had 50% -- 50 Watts, Week 2 I dialed it up to around 75%--80% and at the end of Week 2 and at the start of Week 3 I dialed it up to 100% so 100 Watts
Distance was like 40-45cm away from the plant at all times :) hope I could help!!!