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Live fish now available! New arrivals added regularly Live fish now available! New arrivals added regularly

CO2 Injection

Elevate your freshwater aquarium's plant growth with a CO2 system. From reliable regulators to efficient diffusers, our selection of products provides essential tools for maintaining optimal CO2 levels and fostering a lush, thriving aquatic plant environment.
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72 Items

  1. Pro Dual Stage CO2 Regulator
    Ultum Nature Systems
    Pro Dual Stage CO2 Regulator
    $219.99 $219.99

  2. Neo CO2 DIY CO2 Kit
    AQUARIO
    Neo CO2 DIY CO2 Kit
    $25.49 $29.99

  3. ISTA Disposable CO2 Cartridge (45g)
    ISTA
    ISTA Disposable CO2 Cartridge (45g)
    $11.89 $11.89

  4. CO2 Diffuser
    Twinstar
    CO2 Diffuser
    From: $9.99

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  5. Pro CO2 Manifold Block
    Ultum Nature Systems
    Pro CO2 Manifold Block
    $34.99 $34.99

  6. Pro Mini Dual Stage CO2 Regulator
    Ultum Nature Systems
    Pro Mini Dual Stage CO2 Regulator
    $157.99 $157.99

  7. CO2 Cylinder Pro - 2.5 lbs
    Ultum Nature Systems
    CO2 Cylinder Pro - 2.5 lbs
    $84.99 $84.99

  8. CO2 Paintball Cylinder
    Ultum Nature Systems
    CO2 Paintball Cylinder
    From: $49.99

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  9. Manifold Block for PRO-Elite Series CO2 Regulator
    CO2Art
    Manifold Block for PRO-Elite Series CO2 Regulator
    $49.99 $49.99

  10. PRO-SE Series Dual Stage CO2 Regulator
    CO2Art
    PRO-SE Series Dual Stage CO2 Regulator
    $149.99 $149.99

  11. CO2 Regulator 7077.3
    3 Reviews
    Tunze
    CO2 Regulator 7077.3
    $129.99 $129.99

  12. CO2 Tank - 5 lbs.
    8 Reviews
    Bulk Reef Supply
    CO2 Tank - 5 lbs.
    $93.99 $93.99

  13. Bio-CO2 Pro (up to 33 gallons)
    Fluval
    Bio-CO2 Pro (up to 33 gallons)
    $139.99 $139.99

  14. Bio-CO2 Pro (up to 66 gallons)
    Fluval
    Bio-CO2 Pro (up to 66 gallons)
    $174.99 $174.99

  15. Bio-CO2 Pro (up to 132 gallons)
    Fluval
    Bio-CO2 Pro (up to 132 gallons)
    $349.99 $349.99

  16. CO2 Starter Set
    ISTA
    CO2 Starter Set
    $13.79 $13.79

  17. 1L CO2 Supply Set
    ISTA
    1L CO2 Supply Set
    $259.99 $259.99

  18. Aluminum CO2 Cylinder (1.5 lbs)
    ISTA
    Aluminum CO2 Cylinder (1.5 lbs)
    $119.99 $119.99

  19. Max Mix CO2 Reactor
    ISTA
    Max Mix CO2 Reactor
    $21.19 $21.19

  20. Neo CO2 Refill
    AQUARIO
    Neo CO2 Refill
    $16.99 $19.99

  21. Extended CO2 Diffuser
    AQUARIO
    Extended CO2 Diffuser
    From: $13.59

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  22. Original CO2 Diffuser
    AQUARIO
    Original CO2 Diffuser
    From: $11.04

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  23. Bio-CO2 Pro Refill Pack
    Fluval
    Bio-CO2 Pro Refill Pack
    $12.99 $12.99

  24. Fluval CO2 Indicator Set
    Fluval
    Fluval CO2 Indicator Set
    $17.99 $17.99

  25. CarbonDoser Electronic CO2 Regulator V2.0
    3 Reviews
    CarbonDoser
    CarbonDoser Electronic CO2 Regulator V2.0
    $449.99 $449.99

  26. Aquarium CO2 Drop Checker Solution (15ml)
    CO2Art
    Aquarium CO2 Drop Checker Solution (15ml)
    $7.99 $7.99

  27. CarbonDoser Precision Check Valve
    CarbonDoser
    CarbonDoser Precision Check Valve
    $29.99 $29.99

  28. IO In-Tank CO2 Diffuser - Acrylic Series
    CO2Art
    IO In-Tank CO2 Diffuser - Acrylic Series
    From: $19.99

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  29. In-Tank Flux CO2 Diffuser
    CO2Art
    In-Tank Flux CO2 Diffuser
    From: $28.99

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  30. Stainless Steel U-Bend Tubing Connector
    CO2Art
    Stainless Steel U-Bend Tubing Connector
    From: $9.99

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  31. Black CO2 Resistant Polyurethane Tubing
    CO2Art
    Black CO2 Resistant Polyurethane Tubing
    From: $6.99

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  32. Silver CO2 Resistant Polyurethane Tubing
    CO2Art
    Silver CO2 Resistant Polyurethane Tubing
    From: $6.99

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  33. Green CO2 Resistant Polyurethane Tubing
    CO2Art
    Green CO2 Resistant Polyurethane Tubing
    From: $6.99

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  34. Blue CO2 Resistant Polyurethane Tubing
    CO2Art
    Blue CO2 Resistant Polyurethane Tubing
    From: $6.99

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  35. Pro-Series CO2 Adapter
    CO2Art
    Pro-Series CO2 Adapter
    From: $28.99

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  36. Neo P Clips
    AQUARIO
    Neo P Clips
    From: $8.49

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  37. Neo U Clips
    AQUARIO
    Neo U Clips
    From: $5.94

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  38. Glass U Tube for Airline Tubing
    Seachem
    Glass U Tube for Airline Tubing
    From: $6.31

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  39. Replacement Ceramic Membrane for CO2Art Inline Diffuser
    CO2Art
    Replacement Ceramic Membrane for CO2Art Inline Diffuser
    From: $16.99

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  40. Suction Cups for 4/6mm Tubing (8 Pack)
    CO2Art
    Suction Cups for 4/6mm Tubing (8 Pack)
    $6.99 $6.99