Multi-Paks Medium/Fine Diffusers

Air Stones 10-Pack Model #1010 {1" x 1" x 1"} with 3/16" OD Poly barb, Medium Pore Air Diffuser Stones

Air Stones 4-Pack Model #0031F 1.5" x 1.5" X 3" with 1/4" OD barb, Fine Pore Diffuser Stones

Air Stones 4-Pack Model 0030F 1.5" x 1.5" x 3" with 3/16" OD barb, Fine Pore Diffuser Stones

Air Stones 6-Pack Model #0020F 1.5" x 1.5" x 1.5" with 3/16" OD barb Fine Pore Diffuser Stones

Air Diffuser Stone 4-Pack America's favorite air diffuser! "Bubble Bubba" Micro-Bubble Bar OVER ONE MILLION SOLD Model #BB1030F with Free Shipping

Air Diffuser Stones 25 Pack Model #1111 {.5" x .5" x 1.5"} with 5/32" OD Poly barb, Medium Pore Diffuser Stones

Air Diffuser Stones 25 Pack Model #1112 {.75" x .75" x 1.5"} with 5/32" OD barb, Medium Pore Air Diffuser Stones

Air Stones 25 Pack Model #1111F {.5" x .5" x 1.5"} with 5/32" OD Poly barb, Fine Pore Air Diffuser Stones

Air Diffuser Stones 25 Pack Model #1020 {1" x 1" x 2"} with 3/16" OD Poly barb, Medium Pore Air Diffuser Stones

Air Diffuser Stones 25 Pack Model #1031 {1" x 1" x 3"} with 1/4" OD Poly barb, Medium Pore Air Diffuser Stones

Air Diffuser Stones 25-Pack Model #1030 {1" x 1" x 3"} with 3/16" OD Poly barb, Medium Pore Air Diffuser Stones