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Aquarium air equipment is an essential part of any healthy aquarium setup. Air circulation helps stabilize PH as well as provide necessary oxygen for respiration. Aquarium air pumps will also help give your aquarium tank a more dynamic look when used with air stones and flexible air diffusers. We carry a great selection of aquarium air pumps, heavy-duty linear air pumps, regenerative blowers, battery backup air pumps, air valves and fittings, and aquarium air diffusers.

At AquaCave, we offer some of the best selection & best prices on aquarium air equipment and supplies, Aquarium Air Supplies, Air Pumps, Diffusers, Valves, Tubing for you marine, reef and freshwater aquarium.

  • Pressure Switch, Adjustable

    Sweetwater

    Pressure Switch, Adjustable

    Pressure Switch, Adjustable Adjustable sensitivity.Low-cost method to start backup equipment or trip an alarm or relay. 3/16" air/water line hose barb, connects normally open or normally closed. High-quality, snap action (single-pole double-throw)...

    $89.99
  • Silent Air Pump V30

    AquaCave

    Silent Air Pump V30

    Silent Air Pump V30 Designed to run several air stones from a single pump, the V 30 is suited to both intermittent and continuous duty use. Its robust alloy casing absorbs noise for whisper quiet operation and the filter cover can be removed, allowing...

    $89.99
  • Schego WS3 Air Pump

    Schego

    Schego WS3 Air Pump

    Schego WS3 Air Pump WS3 art. no. 930350 l/h7 Watt160 x 75 x 60 mm1 m cable with US plugwith regulationfor 3 m water column

    $85.00
  • Rebuild Kit Alita Linear Air Pump AL40 Rebuild Kit Alita Linear Air Pump AL40

    Alita

    Rebuild Kit Alita Linear Air Pump AL40

    Rebuild Kit Alita Linear Air Pump AL40 Diaphragm Replacement Kit Part Number: DRK40 For Alita AL-40 Linear Air Pump  Designed to deliver high volume of steady air flow at low-pressure ranges, ALITA Linear Air Pumps are of high efficiency, low...

    $79.99
  • Rebuild Kit Alita Linear Air Pump AL60 Rebuild Kit Alita Linear Air Pump AL60

    Alita

    Rebuild Kit Alita Linear Air Pump AL60

    Rebuild Kit Alita Linear Air Pump AL60 Diaphragm Replacement Kit Designed to deliver high volume of steady air flow at low-pressure ranges, ALITA Linear Air Pumps are of high efficiency, low energy consumption and perform with extremely low operating...

    $79.99
  • Rebuild Kit Alita Linear Air Pump AL80 Rebuild Kit Alita Linear Air Pump AL80

    Alita

    Rebuild Kit Alita Linear Air Pump AL80

    Rebuild Kit Alita Linear Air Pump AL80 With datecode + Serial number from 0410 onward (2004.10)  Diaphragm Replacement Kit Part Number: DRK80 For Alita AL-80 Linear Air Pump  Rebuild Kit Alita Linear Air Pump AL80 Designed to deliver high...

    $79.99
  • Silent Air Pump V20

    AquaCave

    Silent Air Pump V20

    Silent Air Pump V20 Designed to run several air stones from a single pump, the V 20 is suited to both intermittent and continuous duty use. Its robust alloy casing absorbs noise for whisper quiet operation and the filter cover can be removed, allowing...

    $79.99
  • Eco Plus 1 Commercial Air Pump, 18W , 38L/min Eco Plus 1 Commercial Air Pump, 18W , 38L/min

    EcoPlus

    Eco Plus 1 Commercial Air Pump, 18W , 38L/min

    Eco Plus 1 Commercial Air Pump, 18W , 38L/min • Convenient to operate without oil or much noise. • Cylinders and pistons are made of excellent materials, making the pump strong, durable. There is very little wear after long periods of...

    $79.95
  • EPDM Tube Diffuser 40"x2.5" EPDM Tube Diffuser 40"x2.5"

    AquaCave

    EPDM Tube Diffuser 40"x2.5"

    EPDM Tube Diffuser 40"x2.5" Inlet 3/4" thread The 39.4" tube diffuser features a fine pore flexible membrane which provides maximum oxygen transfer efficiency; the high-quality EPDM and silicone construction materials ensures long service life...

    $79.95
  • PennPlax Air-Pod Battery Back-Up Air Pump PennPlax Air-Pod Battery Back-Up Air Pump

    PenPlax

    PennPlax Air-Pod Battery Back-Up Air Pump

    Everyday use and peace-of-mind battery backup in an aquarium air pump. Penn Plax's Air-Pod uses 4 "D" batteries for automatic use when the power goes out. Adjustable flow control dial manages dual outlets. Also includes a power indicator light. Air-Pod...

    $79.95
  • Eheim Aquarium Air Pump 400 Eheim Aquarium Air Pump 400

    Eheim

    Eheim Aquarium Air Pump 400

    Eheim Aquarium Air Pump 400 There are three models with a pump outlet from 100, 200 (2 x 100) and 400 (2 x 200) l/h, on which the smallest model has one and the two larger ones both have two individually adjustable air outlets. And they come equipped...

    $74.95
  • Blue Diamond SS16 Air Pump, 8 Outlet Blue Diamond SS16 Air Pump, 8 Outlet

    Blue Diamond

    Blue Diamond SS16 Air Pump, 8 Outlet

    Blue Diamond SS16 Air Pump, 8 Outlet Flow:16 l/ min Pressure: 15W Weight: 2.7 kg Dimensions: 248 x 176 x 137 mm Connections: 8 Outlets - 4mm Blue Diamond SS16 Air Pump, 8 Outlet

    $69.99
  • Heavy Set Weighted Air Tubing, 3/8" ID - 50' Roll Heavy Set Weighted Air Tubing, 3/8" ID - 50' Roll Heavy Set Weighted Air Tubing, 3/8" ID - 50' Roll

    Pentair Aquatics

    Heavy Set Weighted Air Tubing, 3/8" ID - 50' Roll

    Heavy Set Weighted Air Tubing, 3/8" - 50' Roll Our Heavy Set tubing remains on the bottom when filled with air. Installation is fast, clean and neat. Model: WD2R ID: 3/8" Unit of Measure: 50' Roll  For long distances and large bodies...

    $69.99
  • Silent Air Pump V10

    AquaCave

    Silent Air Pump V10

    Silent Air Pump V10 Designed to run several air stones from a single pump, the V 10 is suited to both intermittent and continuous duty use. Its robust alloy casing absorbs noise for whisper quiet operation and the filter cover can be removed, allowing...

    $69.99
  • Sweetwater Regenerative Blower BF-4 Air Filter Sweetwater Regenerative Blower BF-4 Air Filter

    Sweetwater

    Sweetwater Regenerative Blower BF-4 Air Filter

    Sweetwater Regenerative Blower Air Filter The BF4 is a 4" replacement air filter for models S11, S21, and all Whitewater models The BF6 is a 6" replacement air filter for models S31 and larger  Sweetwater Regenerative Blower Air Filter The BF4...

    $69.99
  • Sweetwater Regenerative Blower BF-6 Air Filter Sweetwater Regenerative Blower BF-6 Air Filter

    Sweetwater

    Sweetwater Regenerative Blower BF-6 Air Filter

    Sweetwater Regenerative Blower Air Filter The BF4 is a 4" replacement air filter for models S11, S21 The BF6 is a 6" replacement air filter for models S31 and largerSweetwater Regenerative Blower Air Filter The BF4 is a 4" replacement air filter for...

    $69.99
  •  5.2" Cylinder Air Diffuser - LOT of 10

    AquaCave

    5.2" Cylinder Air Diffuser - LOT of 10

    5.2" Cylinder Air Diffuser - LOT of 10 - Great for Aquaponics, Hydroponics, Aquarium & Pond They produce a bubble size of 1-2mm  and require a higher pressure. They have a molded aquere rubber support on each end that supports and protects...

    $69.95
  • Eheim Aquarium Air Pump 200 Eheim Aquarium Air Pump 200 Eheim Aquarium Air Pump 200

    Eheim

    Eheim Aquarium Air Pump 200

    Eheim Aquarium Air Pump 200 There are three models with a pump outlet from 100, 200 (2 x 100) and 400 (2 x 200) l/h, on which the smallest model has one and the two larger ones both have two individually adjustable air outlets. And they come equipped...

    $64.45
  • 12” EPDM Membrane Disc Diffuser with 3/4" fitting 12” EPDM Membrane Disc Diffuser with 3/4" fitting 12” EPDM Membrane Disc Diffuser with 3/4" fitting 12” EPDM Membrane Disc Diffuser with 3/4" fitting 12” EPDM Membrane Disc Diffuser with 3/4" fitting

    Blue Diamond

    12” EPDM Membrane Disc Diffuser with 3/4" fitting

    12” EPDM Membrane Disc Diffuser with 3/4" fitting Fine Bubble Membrane Disc Diffuser DFA fine pore flexible membrane diffusers are constructed with premium quality EPDM membranes engineered for superior product life, operational flexibility, and...

    $59.99
  • Blue Diamond SS14 Air Pump, 6 Outlet Blue Diamond SS14 Air Pump, 6 Outlet

    Blue Diamond

    Blue Diamond SS14 Air Pump, 6 Outlet

    Blue Diamond SS14 Air Pump, 6 Outlet Product Type: Air Maximum Flow: 0.49 CFM Pressure: 0.15 bar Weight: 2.1 kilograms Dimensions (LxWxH): 8.82 X 6.42 X 4.96 Inches Connector Size: 0.16", 6 outlets Power: 12W Blue Diamond SS14 Air Pump, 6 Outlet

    $59.99
  • Fluval A402 Air Pump Fluval A402 Air Pump Fluval A402 Air Pump

    Fluval

    Fluval A402 Air Pump

    Fluval A402 Air Pump A Series Air Pumps are designed to significantly improve water circulation and essential oxygen levels for fish, plants, corals and beneficial bacteria. Hobbyists will appreciate a powerful air delivery that is designed with quiet...

    $59.99
  • Heavy Set Weighted Air Tubing, 1/4" ID - 50' Roll Heavy Set Weighted Air Tubing, 1/4" ID - 50' Roll Heavy Set Weighted Air Tubing, 1/4" ID - 50' Roll

    Pentair Aquatics

    Heavy Set Weighted Air Tubing, 1/4" ID - 50' Roll

    Heavy Set Weighted Air Tubing, 1/4" - 50' Roll Our Heavy Set tubing remains on the bottom when filled with air. Installation is fast, clean and neat. Model: WD3R ID: 1/4" Unit of Measure: 50' Roll  For long distances and large bodies...

    $59.99
  • Heavy Set Weighted Air Tubing, 5/8" ID - 25' Roll Heavy Set Weighted Air Tubing, 5/8" ID - 25' Roll Heavy Set Weighted Air Tubing, 5/8" ID - 25' Roll

    Pentair Aquatics

    Heavy Set Weighted Air Tubing, 5/8" ID - 25' Roll

    Heavy Set Weighted Air Tubing, 5/8" - 25' Roll Our Heavy Set tubing remains on the bottom when filled with air. Installation is fast, clean and neat. Model: WD1-25 ID: 5/8" Unit of Measure: 25' Roll  For long distances and large bodies of water...

    $59.99
  • Ozotech - DI Dryer Replacement Cartridge Ozotech - DI Dryer Replacement Cartridge

    OZOTECH

    Ozotech - DI Dryer Replacement Cartridge

    Ozotech - DI Dryer Replacement Cartridge The D-I Air drier is a small affordable air drier that is designed to change colors when the desiccant media stops producing dry air. Its compact size and affordability makes it the perfect choice for small ozone...

    $59.99
  •  4.2" Cylinder Air Diffuser - LOT of 10

    AquaCave

    4.2" Cylinder Air Diffuser - LOT of 10

    4.2" Cylinder Air Diffuser - LOT of 10 - Great for Aquaponics, Hydroponics, Aquarium & Pond They produce a bubble size of 1-2mm  and require a higher pressure. They have a molded aquere rubber support on each end that supports and protects...

    $59.95
  • 11" EPDM Flexible Membrane Diffuser Disc 11" EPDM Flexible Membrane Diffuser Disc 11" EPDM Flexible Membrane Diffuser Disc 11" EPDM Flexible Membrane Diffuser Disc 11" EPDM Flexible Membrane Diffuser Disc

    Alita

    11" EPDM Flexible Membrane Diffuser Disc

    11" EPDM Flexible Membrane Diffuser Disc Fine Bubble Membrane Disc Diffuser DFA fine pore flexible membrane diffusers are constructed with premium quality EPDM membranes engineered for superior product life, operational flexibility and maximum oxygen...

    $59.95
  • EPDM Tube Diffuser 20"x2.5" EPDM Tube Diffuser 20"x2.5"

    AquaCave

    EPDM Tube Diffuser 20"x2.5"

    EPDM Tube Diffuser 20"x2.5" Inlet 3/4" thread The 19.7" tube diffuser features a fine pore flexible membrane which provides maximum oxygen transfer efficiency; the high-quality EPDM and silicone construction materials ensure long service life...

    $59.95
  • Ultrazone NANO Ozone Replacement Lamp Ultrazone NANO Ozone Replacement Lamp Ultrazone NANO Ozone Replacement Lamp Ultrazone NANO Ozone Replacement Lamp

    UltraLife

    Ultrazone NANO Ozone Replacement Lamp

    Ultrazone NANO Ozone Replacement Lamp Ozone is by far the best way to boost your water quality. The Ultrazone Series Ozone Generators clean up aquarium water by removing unwanted organic decay, proteins and pollutants. By eliminating harmful organics,...

    $54.95
  •  Eheim Aquarium Air Pump 100   Eheim Aquarium Air Pump 100   Eheim Aquarium Air Pump 100

    Eheim

    Eheim Aquarium Air Pump 100

    Eheim Aquarium Air Pump 100 There are three models with a pump outlet from 100, 200 (2 x 100) and 400 (2 x 200) l/h, on which the smallest model has one and the two larger ones both have two individually adjustable air outlets. And they come equipped...

    $52.95
  • Schego WS2 Air Pump

    Schego

    Schego WS2 Air Pump

    Schego WS2 Air Pump WS2 art. no. 920250 l/h5 Watt130 x 70 x 50 mm1 m cable with US plugwith regulationfor 2 m water column  

    $50.00
  • Eco Air 4 Plus Air Pump Eco Air 4 Plus Air Pump

    EcoPlus

    Eco Air 4 Plus Air Pump

    Eco Air series pumps are very quiet, yet extremely powerful and long lasting. Controllable variable output on some models. Eco Air 4 Specifications: * Power: 12W * Output (l/min): 9 * Pressure: 1.75 psi * Dimensions: 7.75" x 5.7" x 4.2"Eco Air series...

    $49.99
  •  3.2" Cylinder Air Diffuser - LOT of 10

    AquaCave

    3.2" Cylinder Air Diffuser - LOT of 10

    3.2" Cylinder Air Diffuser - LOT of 10 - Great for Aquaponics, Hydroponics, Aquarium & Pond They produce a bubble size of 1-2mm  and require a higher pressure. They have a molded aquere rubber support on each end that supports and protects...

    $49.95
  • Oase OxyMax 400 Air Pump Oase OxyMax 400 Air Pump

    OASE

    Oase OxyMax 400 Air Pump

    Oase OxyMax 400 Air Pump Consistent flow - Constant steady airflow. Easily adjust the air flow rate for the diffuser Quiet operation - Vibration resistant rubber feet and eye hook, and insulated housing prevent excess vibration and...

    $46.99
  •  Aquatop BREZA Fusion 700 Air Pump  Aquatop BREZA Fusion 700 Air Pump

    Aquatop BREZA Fusion 700 Air Pump

    Aquatop BREZA Fusion 700 Air Pump Silence is golden with the Aquatop® BREZA Fusion Air Pumps. BREZA Fusion Air Pumps feature a patented baffle systemwith a series of chambers interlinked by small openings that creates pressure as the air is pushed...

    $44.99
  • 10” EPDM Membrane Disc Diffuser with 3/4" fitting 10” EPDM Membrane Disc Diffuser with 3/4" fitting 10” EPDM Membrane Disc Diffuser with 3/4" fitting 10” EPDM Membrane Disc Diffuser with 3/4" fitting 10” EPDM Membrane Disc Diffuser with 3/4" fitting

    Blue Diamond

    10” EPDM Membrane Disc Diffuser with 3/4" fitting

    10” EPDM Membrane Diffuser with 3/4" fitting Fine Bubble Membrane Disc Diffuser DFA fine pore flexible membrane diffusers are constructed with premium quality EPDM membranes engineered for superior product life, operational flexibility, and maximum...

    $44.99
  • Blue Diamond SS10 Air Pump, 4 Outlet Blue Diamond SS10 Air Pump, 4 Outlet

    Blue Diamond

    Blue Diamond SS10 Air Pump, 4 Outlet

    Blue Diamond SS10 Air Pump, 4 Outlet Flow: 10 l/min / 0.35 cfm from four outlets with 2 l/min / 0.07 cfm flow from each outlet. Power Consumption: 10W Weight: 1.6kg Size 185 x 95 x 15 mm   Additional Information: The SS10 Pump has four outlets...

    $44.99
  • Fluval A202 Air Pump Fluval A202 Air Pump Fluval A202 Air Pump

    Fluval

    Fluval A202 Air Pump

    Fluval A202 Air Pump A Series Air Pumps are designed to significantly improve water circulation and essential oxygen levels for fish, plants, corals and beneficial bacteria. Hobbyists will appreciate a powerful air delivery that is designed with quiet...

    $44.99
  • Rebuild Kit Alita Linear Air Pump AL25M - AL35M Rebuild Kit Alita Linear Air Pump AL25M - AL35M

    Alita

    Rebuild Kit Alita Linear Air Pump AL25M - AL35M

    Rebuild Kit Alita Linear Air Pump AL25M & AL35M SK35 Diaphragm Service Kit for ALITA AL-25M & AL-35M Linear Air Pumps Kit includes: Replacement diaphragms (2x) Replacement air valves (4x) Replacement porous PE filter/silencer, 20-micron...

    $44.99
  • Aquatop BREZA Fusion 600 Air Pump Aquatop BREZA Fusion 600 Air Pump

    Aquatop BREZA Fusion 600 Air Pump

    Aquatop BREZA Fusion 600 Air Pump Silence is golden with the Aquatop® BREZA Fusion Air Pumps. BREZA Fusion Air Pumps feature a patented baffle systemwith a series of chambers interlinked by small openings that creates pressure as the air is pushed...

    $39.99
  • Fluval A101 Air Pump Fluval A101 Air Pump Fluval A101 Air Pump

    Fluval

    Fluval A101 Air Pump

    Fluval A101 Air Pump A Series Air Pumps are designed to significantly improve water circulation and essential oxygen levels for fish, plants, corals and beneficial bacteria. Hobbyists will appreciate a powerful air delivery that is designed with quiet...

    $39.99
  • Heavy Set Weighted Air Tubing, 3/8" ID - 25' Roll Heavy Set Weighted Air Tubing, 3/8" ID - 25' Roll Heavy Set Weighted Air Tubing, 3/8" ID - 25' Roll

    Pentair Aquatics

    Heavy Set Weighted Air Tubing, 3/8" ID - 25' Roll

    Heavy Set Weighted Air Tubing, 3/8" - 25' Roll Our Heavy Set tubing remains on the bottom when filled with air. Installation is fast, clean and neat. Model: WD2-25 ID: 3/8" Unit of Measure: 25' Roll  For long distances and large bodies...

    $39.99