Blue Thumb Molded Autofill Chamber Amish Handmade These airstones produce finer bubbles

These airstones produce finer bubbles for increased aeration efficiency with no increase in pressure

Brass valves control air flow between each line

Helix Dry Beneficial Bacteria is of the highest quality and contains electrolytes

gently tumbling the media and keeping the bacteria alive

4"H 103gph 250ml 0-75 R800128 Medium Side Flow 6

Blue Thumb Molded Autofill Chamber Amish Handmade These airstones produce finer bubblesThe Blue Thumb (formerly PondBuilder) Molded Autofill Chamber is perfect for use in water features that need an autofill system, but do not have a skimmer or pump canyon present. Low profile makes it easy to hide. Snap on lid for maintenance. Works best with PondBuidler autofill kit (PB1342) Dimensions: 7. 75" x 9. 5" x 10. 25"