Fzone Studio's is the largest aquatic regulator manufacture in the world. Here at Fzone we understand the importance of providing a stable environment for your plants and livestock. We provide co2 regulators to fit on all tank types; paintball, CGA320, & cartridges. All regulators are fitted with high precision Co2 needle valves to ensure an accurate delivery of Co2. All regulators include warranty. Below you will find all of Fzone's regulators.