Rectangular Ponds Tank Master supply a wide range of PondMAX and Aquapro Rectangular Ponds. AQUAPRO Rectangular Feature Poly Pond 1200 AQUAPRO Rectangular Feature Poly Pond 1600 PondMAX Freestanding Rectangular Pond 1050 PondMAX Freestanding Rectangular Poly Pond 1280 PondMAX Freestanding Rectangular Poly Pond 1740