Pondmaster® 7" Diameter Ring Air Diffuser Tetra Pond This is an excellent replacement

This is an excellent replacement Agitator for any bead filter

healthy and algae-free over the long haul

Hamilton Style - White with black fan lattice

The filtered water flow back into the pipework at the top of the unit

It should be noted that it may take some time for biological filtration to be established

Pondmaster® 7" Diameter Ring Air Diffuser Tetra Pond This is an excellent replacementThe Pondmaster 7" Diameter Ring Air Diffuser has a total length of 18" and has 48" square inches of active surface area. It is designed for use with the Pondmaster AP 40, AP 60 and AP 100 air pumps. The recommended tubing sizes are 3 4" or 1", but no tubing is included with the diffuser. Instructions