G.A.S. Day & Night Humidity Controller Plagron One we recommend a lot

One we recommend a lot for growers moving into the flowering phase

Sprays are one-off temporary fixes

coco or hydro)

This is where it matters most

Larger Sentinel models like the HD90 have a lower rated capacity than Quest's biggest units

G.A.S. Day & Night Humidity Controller Plagron One we recommend a lotG. 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.