Vortex Ultra Silent Ducting Size:12" the pH Pen delivers digital

the pH Pen delivers digital readouts of your nutrient solution's pH

so there’s no need to put up multiple lights for the vegetative and flowering stages

saving you time and money

magnetic quick-assembly design

With over a decade of research and innovation

Vortex Ultra Silent Ducting Size:12" the pH Pen delivers digitalUltra Silent Ducting fits directly over the flange of any appropriately sized extractor fan or filter, and an appropriately sized duct clip is usually used to hold it tightly in place. Key Features Massively reduces the noise caused by airflow Ultra efficient and flexible material High quality Sleek design, and tough material Variety of sizes available