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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  1. LoPro External Overflow Box (400 GPH) - Fiji Cube
    Rating:
    50%
    Fiji Cube
    LoPro External Overflow Box (400 GPH) - Fiji Cube
    $99.99

    Earn 99 Reward Points

    $99.99
  2. LoPro External Overflow Box (800 GPH) - Fiji Cube
    Rating:
    100%
    Fiji Cube
    LoPro External Overflow Box (800 GPH) - Fiji Cube
    $121.49

    Earn 121 Reward Points

    $121.49
  3. LoPro External Overflow Box (1600 GPH) - Fiji Cube
    Fiji Cube
    LoPro External Overflow Box (1600 GPH) - Fiji Cube
    $179.99

    Earn 179 Reward Points

    $179.99
  4. LoPro External Overflow Box (2400 GPH) - Fiji Cube
    Fiji Cube
    LoPro External Overflow Box (2400 GPH) - Fiji Cube
    $215.99

    Earn 215 Reward Points

    $215.99
  5. Deluxe CS50 Overflow with Lid and Aqua Lifter - CPR Aquatics
    Rating:
    93%
    CPR Aquatics
    Deluxe CS50 Overflow with Lid and Aqua Lifter - CPR Aquatics
    $199.99

    Earn 995 Reward Points Earn 1,990 Reward Points

    $199.99
  6. Deluxe CS90 Overflow with Lid and Aqua Lifter - CPR Aquatics
    Rating:
    93%
    CPR Aquatics
    Deluxe CS90 Overflow with Lid and Aqua Lifter - CPR Aquatics
    $229.99

    Earn 1,145 Reward Points Earn 2,290 Reward Points

    $229.99
  7. Deluxe CS100 with Lid and Aqua Lifter
    Rating:
    93%
    CPR Aquatics
    Deluxe CS100 Overflow with Lid and Aqua Lifter - CPR Aquatics
    $249.99

    Earn 1,245 Reward Points Earn 2,490 Reward Points

    $249.99
  8. Deluxe CS150 Overflow with Lid and Aqua Lifter - CPR Aquatics
    Rating:
    60%
    CPR Aquatics
    Deluxe CS150 Overflow with Lid and Aqua Lifter - CPR Aquatics
    $274.99

    Earn 1,370 Reward Points Earn 2,740 Reward Points

    $274.99
  9. OM2500 HOB Overflow Box - Skimz
    Rating:
    80%
    Skimz
    OM2500 HOB Overflow Box - Skimz
    $119.99

    Earn 119 Reward Points

    $119.99
  10. OM5000 HOB Overflow Box - Skimz
    Rating:
    53%
    Skimz
    OM5000 HOB Overflow Box - Skimz
    $139.99

    Earn 139 Reward Points

    $139.99
  11. PF-Nano, Nano overflow Box 10-20g Single Intake
    Eshopps
    PF-Nano HOB Overflow - Eshopps
    $93.99

    Earn 465 Reward Points Earn 930 Reward Points

    $93.99
  12. PF-300, 30-75g Single Intake
    Eshopps
    PF-300 HOB Overflow - Eshopps
    $102.99

    Earn 510 Reward Points Earn 1,020 Reward Points

    $102.99
  13. PF-800, 75-125g Single Intake
    Rating:
    80%
    Eshopps
    PF-800 HOB Overflow - Eshopps
    $112.99

    Earn 560 Reward Points Earn 1,120 Reward Points

    $112.99
  14. PF-1000, 125-150g Dual Intakes
    Rating:
    100%
    Eshopps
    PF-1000 HOB Overflow - Eshopps
    $126.99

    Earn 630 Reward Points Earn 1,260 Reward Points

    $126.99
  15. PF-1800, 200-300g Dual Intakes
    Rating:
    100%
    Eshopps
    PF-1800 HOB Overflow - Eshopps
    $169.99

    Earn 845 Reward Points Earn 1,690 Reward Points

    $169.99
  16. PF-1200 HOB Overflow - Eshopps
    Eshopps
    PF-1200 HOB Overflow - Eshopps
    $140.99

    Earn 700 Reward Points Earn 1,400 Reward Points

    $140.99
  17. CPR Retrofit Overflow Box
    Rating:
    62%
    CPR Aquatics
    Retrofit Overflow Box - CPR Aquatics

    Starting at: $49.99

    Earn 245 Reward Points Earn 490 Reward Points

  18. Retrofit Overflow Box with Backing - CPR Aquatics
    Rating:
    96%
    CPR Aquatics
    Retrofit Overflow Box with Backing - CPR Aquatics

    Starting at: $62.99

    Earn 310 Reward Points Earn 620 Reward Points

  19. CPR Retrofit Overflow Box Lid - Several Sizes Available
    Rating:
    77%
    CPR Aquatics
    Retrofit Overflow Box Lids - CPR Aquatics

    Starting at: $12.99

    Earn 60 Reward Points Earn 120 Reward Points

  20. Deluxe CS102 Overflow with Lid and Aqua Lifter - CPR Aquatics
    Rating:
    93%
    CPR Aquatics
    Deluxe CS102 Overflow with Lid and Aqua Lifter - CPR Aquatics
    $264.99

    Earn 1,320 Reward Points Earn 2,640 Reward Points

    $264.99
  21. INOUT Overflow and Pulsing Return System - XAqua
    Rating:
    100%
    XAqua
    INOUT Overflow and Pulsing Return System - XAqua
    $99.11

    Earn 495 Reward Points Earn 990 Reward Points

    $99.11
  22. Eclipse S Overflow Box (600 GPH) - Eshopps
    Rating:
    100%
    Eshopps
    Eclipse S Overflow Box (600 GPH) - Eshopps
    $132.99

    Earn 660 Reward Points Earn 1,320 Reward Points

    $132.99
  23. Eclipse M Overflow Box (800 GPH) - Eshopps
    Rating:
    96%
    Eshopps
    Eclipse M Overflow Box (800 GPH) - Eshopps
    $145.99

    Earn 725 Reward Points Earn 1,450 Reward Points

    $145.99
  24. Eclipse L Overflow Box (1000 GPH) - Eshopps
    Rating:
    71%
    Eshopps
    Eclipse L Overflow Box (1000 GPH) - Eshopps
    $158.99

    Earn 790 Reward Points Earn 1,580 Reward Points

    $158.99
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