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so this ones been bugging me forever I just want a control that will simply control thespeed of my fan to a specified setpoint with day and night. every day/night controller I've tried constantly has the fan kicking on and off. even the mercury 3 that's supposed to regulate fan speed and...

alright so I just set up a new 4k stadium barw bulbs and am having an hvac question. well I have a 12" exhaust plus 2 12" passive intakes but they are in the bathroom right behind the stadium, with door open. I want to more directly push air from outside right into my growzone with an 8"...