i have 2 6" inline fans 240cfm boost i think 180 normally. i tried a speed controller and it would only work at full speed,, whenever i adjusted the dial the slightest the fan would shutoff so i sent it back. what is a good one and will it control the fans and 1 6" oscillating fan. the oscillating fan blows too hard on low but it is the only fan that would fit in my tent since it is a clip fan but i tie wrapped it to the side pole. i have passive intake and with the exhaust fans it sucks my tent in like a cheap date. this is my first grow and i learn by my mistakes. thanks for any input.