Critical Mass CBD x 2

@Megumin, You will not regret purchasing that light, it's fantastic. And thank you for the kind words! The reason for not going full power is heat mainly. I grow in a small space (60x60x140 tent) in a warm house and at full power I was seeing temps go up to 30c+ in the day. At 100w I see temps of around 25-26c. When I got the light I looked up guides and advise, generally it seems most people tend to run at 80%-90% power. They also use the light to regulate heat (hotter = turn up the wattage and move the light away. Cooler = turn the wattage down and move the light closer). For me personally it's all about balancing internal temperatures and exhaust fan noise, so I choose to run the fan slower to reduce noise which in turn increases the temperatures. I just set the light to whatever wattage fits within that. I stand to be corrected though, so do not take my word for it! On my current grow I am running the light at a higher wattage and plan to go about 90% max (about 120w).