"Bubble-Bubba" Diffuser Bumpers - {10 pack}
$5.99
American Made Buna 70 O Rings
Will protect the air diffuser stone from abrasives or protect your tank liner.
They fit snugly on the diffuser, we recommend 2 per diffuser.
Diffuser Bumpers increase air stone efficiency by providing
20% additional bubble area {The underside of the diffuser}.
