Reflector Set-up for 3x6 Trays

[grass hopper]

so the fans on full blast the whole time?

NO. I keep just below 50% power. i spyed these fans (new) on ebay for $55. add $20 shipping. also sell used and rebuilds. get a good controller. again i bought growbrights. shop for a combo, may be cheaper. i would start on ebay for new. then maybe another 20 minutes shop for better price. htg set me up. if i was starting over as u, i would speak with them for their ideas. but would probably not buy there. better prices elsewhere. goodluck