Overflows

Aquarium Overflows allow water to travel from your display tank down to a sump or other filtration devices. The overflow will set the water level in your display tank, and any water that makes it over the edge of the overflow box will then fall down to your filtration system. Their are multiple styles of overflows and we HIGHLY recommend a traditional internal overflow that requires a drilled aquarium. However, there are HOB (hang on back) styles of overflows that utilize a siphon principal to bring the water up and over the edge of the aquarium before it can travel down to the sump which does not require any holes in your aquarium. HOB overflows do have some inherent risks for flooding which is why we recommend a internal overflow.
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22 Items

  1. Deluxe CS50 Overflow with Lid and Air Pump
    CPR Aquatics
    Deluxe CS50 Overflow with Lid and Air Pump
    $209.99

    $209.99
  2. Deluxe CS90 Overflow with Lid and Air Pump
    CPR Aquatics
    Deluxe CS90 Overflow with Lid and Air Pump
    $233.99

    $233.99
  3. Deluxe CS102 Overflow with Lid and Air Pump
    CPR Aquatics
    Deluxe CS102 Overflow with Lid and Air Pump
    $283.99

    $283.99
  4. High Tide Water Risers for Fusion Pro 2 Desktop Aquariums
    Innovative Marine
    High Tide Water Risers for Fusion Pro 2 Desktop Aquariums
    $9.99

    $9.99
  5. Prodigy M Low Profile Overflow Box (700 GPH)
    Eshopps
    Prodigy M Low Profile Overflow Box (700 GPH)
    $179.98

    $179.98
  6. Prodigy L Low Profile Overflow Box (900 GPH)
    Eshopps
    Prodigy L Low Profile Overflow Box (900 GPH)
    $199.98

    $199.98
  7. LoPro External Overflow Box (400 GPH)
    Fiji Cube
    LoPro External Overflow Box (400 GPH)
    $107.09

    $125.99
  8. LoPro External Overflow Box (1600 GPH)
    Fiji Cube
    LoPro External Overflow Box (1600 GPH)
    $190.39

    $223.99
  9. Eclipse S Overflow Box (600 GPH)
    Eshopps
    Eclipse S Overflow Box (600 GPH)
    $139.98

    $139.98
  10. PF-300 HOB Overflow
    Eshopps
    PF-300 HOB Overflow
    $119.98

    $119.98
  11. PF-800 HOB Overflow
    Eshopps
    PF-800 HOB Overflow
    $129.98

    $129.98
  12. PF-1000 HOB Overflow
    Eshopps
    PF-1000 HOB Overflow
    $149.98

    $149.98
  13. LoPro External Overflow Box (800 GPH)
    Fiji Cube
    LoPro External Overflow Box (800 GPH)
    $130.89

    $153.99
  14. PF-Nano HOB Overflow
    Eshopps
    PF-Nano HOB Overflow
    $89.98

    $89.98