G.A.S UK - 4 Amp Pro Plus Hybrid Controller Beneficial Inoculants If you're setting up a

If you're setting up a grow room ventilation system and want EC efficiency without the premium markup

Multi-room coverage

well below commercial units

day out - one we sell a lot of at harvest time

Installation and operation depend on your system size and setup:

G.A.S UK - 4 Amp Pro Plus Hybrid Controller Beneficial Inoculants If you're setting up aG. A. S UK 4 Amp Pro Plus Hybrid Controller Silent Step Control with Integrated Heater Output Best for: growers who want quiet, click free AC fan speed control plus coordinated heater switching from the same unit. Our thoughts The "Pro Plus" tag isn't just marketing here it genuinely adds a heater control output on top of the Pro Step Controller's silent transformer based speed steps. If you've used a cheap step controller before and hated the buzzing