Model #BDD-1 Koi Pond Bottom Drain Diffuser

This Bubblemac Bottom Drain Diffuser is designed to add life sustaining dissolved oxygen to the water column; while creating circulation (sweeping action) to direct debris back to the bottom drain opening and on to the biological filter.

Self-weighted, the diffuser will remain in place and function as described when installed around the bottom drain opening in your pond.

This Bubblemac high-quality Bottom Drain Diffuser is comprised of seven 1” x 1” x 2”, 100% Glass Bonded Silica medium pore air diffusers assembled in a circle with clear PVC tubing. The air line connection barb is ¼” OD.