Big W carries a full range of polyethylene tanks including: Vertical flat bottom storage - 50 gallon through 11,000 gallon fertilizer tanks for storage of agricultural chemicals. Applicator tanks - horizontal saddle tanks and leg tanks 25 gallon through 1000 gallons, lawn and garden spot sprayer tanks 8 - 25 gallon, utility or pick up truck tanks and elliptical tanks. Cone bottom tanks - drainable 17 gallon mix tanks, through 11,850 gallons tanks in 30, 45 and 60 degree cones with engineered, welded steel stands. Super nurse transport tanks - skid mounted and leg styles - 30 gallon through 3400 gallon. Spherical tanks - 1100 gallon.