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Air Diffusers

Air diffusers are great for aerating or circulating nutrients in your tanks or reservoirs. We carry wide variety of air diffusers from fine pore oxygen diffusers, weighted air hose diffusers,  to high output EPDM membrane diffusers, 

At AquaCave, we offer some of the best selection & best prices on Aquarium air stones and air diffusers for you marine, reef, and freshwater aquarium.

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  • Blue Durable air stone 12"

    AquaCave

    Blue Durable air stone 12"

    Blue Durable air stone 12"Inexpensive molded diffusers, 3/16" barb inlets. Blue Durable air stone 12"Inexpensive molded diffusers, 3/16" barb inlets. Product code: 4689Item No. AE-AA12

    $3.99
    Add to Cart
  • Elite 4" Deluxe Bubble Disc

    Fluval

    Elite 4" Deluxe Bubble Disc

    Elite 4" Deluxe Bubble DiskBubble Disk Diffusers create a circle of bubbles for healthy fish and a beautiful aquarium.Three sizes available...Elite 4" Deluxe Bubble Disk. Bubble Disk Diffusers create a circle of bubbles for healthy fish and a beautiful...

    $3.95
    Add to Cart
  • Penn-Plax 3" Bubble Disc Diffuser

    PenPlax

    Penn-Plax 3" Bubble Disc Diffuser

    Penn-Plax 3" Bubble Disk DiffuserBubble Disk Diffusers create a circle of bubbles for healthy fish and a beautiful aquarium. Three sizes available.Penn-Plax 3" Bubble Disk DiffuserBubble Disk Diffusers create a circle of bubbles for healthy fish and a...

    $3.95
    Sold Out - More on the way
  • Marina Millionaire Air Stone - 3 Pack Marina Millionaire Air Stone - 3 Pack

    Fluval

    Marina Millionaire Air Stone - 3 Pack

    Marina Millionaire Air Stone - 3 Pack The Marina air diffuser is ideal for adding bubbly highlights in your aquarium. Simply connect the air diffuser to your airline tubing and place it in desired location. Weigh it down or simply cover it with gravel...

    $3.95
    Add to Cart
  • Blue Durable air stone 8"

    AquaCave

    Blue Durable air stone 8"

    Blue Durable air stone 8"Inexpensive molded diffusers, 3/16" barb inlets. Blue Durable air stone 8"Inexpensive molded diffusers, 3/16" barb inlets. Product code: 4688Item No. AE-AA8

    $2.99
    Add to Cart
  • Blue Durable air stone 6"

    AquaCave

    Blue Durable air stone 6"

    Blue Durable air stone 6" Inexpensive molded diffusers, 3/16" barb inlets. Blue Durable air stone 6" Inexpensive molded diffusers, 3/16" barb inlets. Product code: 4687Item No. AE-AA6

    $2.49
    Add to Cart
  • Blue Durable air stone 4"

    AquaCave

    Blue Durable air stone 4"

    Blue Durable air stone 4" Inexpensive molded diffusers, 3/16" barb inlets. Blue Durable air stone 4" Inexpensive molded diffusers, 3/16" barb inlets. Product code: 4686Item No. AE-AA4

    $1.99
    Add to Cart
  • 1.25" dia. x 2.75" Long Cylinder Air Stone 1.25" dia. x 2.75" Long Cylinder Air Stone

    AquaCave

    1.25" dia. x 2.75" Long Cylinder Air Stone

    EcoPlus  1.25" dia. x 2.75" Long Cylinder Air StoneThese diffusers are made from alumina that is heat-bonded. Use with 1/4" I.D. tubing.1.25" dia. x 2.75" Long., 3/16" outletEcoPlus  1.25" dia. x 2.75" Long Cylinder Air StoneThese diffusers are...

    $1.95
    Add to Cart
  • 1" dia. x 2" Long Cylinder Air Stone 1" dia. x 2" Long Cylinder Air Stone

    AquaCave

    1" dia. x 2" Long Cylinder Air Stone

    EcoPlus 1" dia. x 2" Long Cylinder Air StoneThese diffusers are made from alumina that is heat-bonded. Use with 1/4" I.D. tubing.1" dia. x 2" Long, 3/16" outletEcoPlus 1" dia. x 2" Long Cylinder Air StoneThese diffusers are made from alumina that is...

    $1.69
    Add to Cart
  • Blue Durable air stone 1"

    AquaCave

    Blue Durable air stone 1"

    Blue Durable air stone 1" Molded 1" diffusers,  7/16" in diameter., 3/16" barb inlets.       Blue Durable air stone 1" Molded 1" diffusers,  9/16" in diameter., 3/16" barb inlets.       Product code: 4343Item...

    $0.69
    Add to Cart
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