Assmann Corp. of America received patents for its molded full-drain outlet (FDO) assembly (U.S. No. 8,348,090 B2) and modular polyethylene tank stands (U.S, 8,814,110 B2). The FDO, for tanks 2,500 gallons and larger, provides the ability to drain the tank without the need for mechanically installed nozzles and can be utilized where heavy solids or salts might accumulate in the bottom of the tank. The tank stands, for use with the FDO assembly, can be installed on any suitable, flat surface and elevate tanks 12 inches from grade for a full-drain tank without the need to pour concrete.