Geyser Perc Posted by Sean Geng on August 28, 2019 The Geyser Percolator is a perc coined by Hi Si Glass using their unique design. True to it's name, it's a geyser of filtration and is designed for optimal airflow and filtration. Related Topics Geyser Perc Encyclopedia How Does Your Endocannabinoid System Work? 6 Minute Read Products with Geyser Perc Discuss "Geyser Perc"