Heavy-duty and lightweight large-capacity rotomolded polyethylene inground tanks from Premier Tech Aqua are manufactured according to an assembly process and welding control system that makes them sturdy and high quality, according to the maker. Developed specifically for water storage and wastewater treatment use, the tanks are adapted to North American climates and are suitable for a large variety of commercial, community and municipal applications, including rainwater harvesting and firewater storage, septic tanks, equalization tanks, different types of bioreactors (MBBR, MBR, SBR) and complete process lines. Easy to handle and available in 4,000- to 12,000-gallon capacities, they are delivered ready to use. 800/632-6356; www.premiertechaqua.com.