Fortrans designs and manufactures C0₂-based pH control systems and wastewater aeration systems. The technology is based on patented Dif-jet gas injectors that efficiently mix air, oxygen or carbon dioxide into water. The pH control systems can treat to 25 to 240 gpm and can treat high solids water without fouling. The wastewater aeration systems can replace floating aerators and add supplemental dissolved oxygen. The external manifold designs circulate the aerated water for maximum efficiency and have very low maintenance requirements. These systems are compatible with most blowers.