150mm

Hi there i was wondering, can i use a 150mm fan with a reducer down to an 100mm carbon filter i was going to fit a varispeed plug to the fan to adjust speed is this ok i just think a 150mm filter is overkill but a 150mm fan came cheap, is this ok to do, input welcome

hi everyone, this is my first time posing and growing (look at me popping 2 cherry's at once lol). im running a 1.2x1.2 tent with 600w HiD, euro reflector and magnetic ballast. 150mm rhino L1 with 150mm rhino filter run of a rhino RC-1 controller and a 2000kW thermally controlled oil filled...