G.A.S. Day & Night Humidity Controller Bulky so make sure your fan

so make sure your fan has enough spare capacity to still hit your target air changes in both spaces

8″) to match different lamp outputs

Dutch Pro recommends a soil pH of 5

plug in your fan

carbon filter

G.A.S. Day & Night Humidity Controller Bulky so make sure your fanG. A. S. Day & Night Humidity Controller Light Sensing Humidifier Automation Best for: Growers who need to dial in separate humidity levels for lights on and lights off, without the complexity or cost of smart controllers Our thoughts Dead simple, genuinely useful, and won't break the bank. If you're running a humidifier and want it to do different things during day and night phases, this does the job without any faffing about with apps or batteries.