Blue Thumb Formal Falls Basins Yellow Pine These replacement spring check valves

These replacement spring check valves are used as replacements for the double union check valves used on AquaBead filters

Out-performs leather

Designed for use with Oase fountain pumps

Color Intensifier keeps the body conformation of all Koi in a constant show-ready condition

Will not break apart or cloud water

Blue Thumb Formal Falls Basins Yellow Pine These replacement spring check valvesBlue Thumb (formerly PondBuilder) Formal Falls Basins provide an ideal water basin for use with Formal Falls pond less water features. Each basin comes with prefilter and anti splash mat, and can be used with Blue Thumb Autofill Kit (not included). Model Small Basin Large Basin* SKU PB1632 PB2644 Compatible Formal Falls Small or Medium Large Includes Prefilter and Anti Splash Mat Dimensions 44. 25" x 22" x 16" H 56" x 24" x 16" H Water Capacity 42