Is there an easy way to estimate the necessary airflow for a box? Or do you just hafta guess 'n check? Also, how much of a difference should you have between out and intake?
It all depends on grow space size, light size, heat, and humidity. Post box diminsions and equipment specs and we'll try to figure somethin out. U want your biggest fan for exhaust. Might try intake holes b4 u put an intake fan, that might b all u need.