What, hvac isn't free?I am asking because I will starting a small commercial grow from scratch around 3000 sq ft. I have 16 1000w hps running in a small room now and the heat issue is getting old fast. I am going to need over 100 lights and if i use hps i will be looking at a huge expense for the hvac system. So i am going to be going with led it is higher upfront costs but they will pay for themselves within the year in savings. I am just torn between these leds looking at hlg 550 v2s they are ETL and CSA certified. Also looking at nextlight mega and fluence spydr series. Blackdogs seem way overpriced every light claims to be the best and just figured i would ask some of you guys that know a lot about leds.