Pondmaster® 7" Diameter Ring Air Diffuser Tetra Pond a 5/8" barb and a

a 5/8" barb and a 1" barb to attach to any of those hose sizes

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

Hamilton Style - White with black fan lattice

air pumps can add needed oxygen to Koi ponds in hot summer months when oxygen levels decline

This is an excellent replacement Agitator for any bead filter

Pondmaster® 7" Diameter Ring Air Diffuser Tetra Pond a 5/8" barb and aThe 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