Koi Pond Bottom Drain Diffuser Model #BDD-1
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.