Meeting made-to-order specs & saving you money, Protectoplas specializes in many plastic tank styles: vertical, horizontal, mix tanks, chemical storage & water tanks, cone bottom, double wall, insulated, fiberglass, Ag-Tank II™ & Bleach-Guard™. Contact a tank design specialist today for a quick quote & great availability. 500 to 15,000 gallon stock tanks. Custom containment systems to 500,000+.