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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23 Items

  1. Deluxe CS50 Overflow with Lid and Air Pump
    CPR Aquatics
    Deluxe CS50 Overflow with Lid and Air Pump
    $178.49

    Earn 890 Reward Points Earn 1,780 Reward Points

    $209.99
  2. Deluxe CS102 Overflow with Lid and Air Pump
    CPR Aquatics
    Deluxe CS102 Overflow with Lid and Air Pump
    $241.39

    Earn 1,205 Reward Points Earn 2,410 Reward Points

    $283.99
  3. Deluxe CS150 Overflow with Lid and Air Pump
    CPR Aquatics
    Deluxe CS150 Overflow with Lid and Air Pump
    $237.99

    Earn 1,185 Reward Points Earn 2,370 Reward Points

    $279.99
  4. Prodigy M Low Profile Overflow Box (700 GPH)
    Eshopps
    Prodigy M Low Profile Overflow Box (700 GPH)
    $179.98

    Earn 179 Reward Points

    $179.98
  5. PF-800 HOB Overflow
    Eshopps
    PF-800 HOB Overflow
    $129.98

    Earn 645 Reward Points Earn 1,290 Reward Points

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

    Earn 745 Reward Points Earn 1,490 Reward Points

    $149.98
  7. PF-1200 HOB Overflow
    Eshopps
    PF-1200 HOB Overflow
    $159.98

    Earn 795 Reward Points Earn 1,590 Reward Points

    $159.98
  8. INOUT Overflow and Pulsing Return System
    XAqua
    INOUT Overflow and Pulsing Return System
    $93.61

    Earn 465 Reward Points Earn 930 Reward Points

    $110.13
  9. Deluxe CS90 Overflow with Lid and Air Pump
    CPR Aquatics
    Deluxe CS90 Overflow with Lid and Air Pump
    $198.89

    Earn 990 Reward Points Earn 1,980 Reward Points

    $233.99
  10. Prodigy L Low Profile Overflow Box (900 GPH)
    Eshopps
    Prodigy L Low Profile Overflow Box (900 GPH)
    $199.98

    Earn 199 Reward Points

    $199.98
  11. Eclipse S Overflow Box (600 GPH)
    Eshopps
    Eclipse S Overflow Box (600 GPH)
    $139.98

    Earn 695 Reward Points Earn 1,390 Reward Points

    $139.98
  12. Eclipse M Overflow Box (800 GPH)
    Eshopps
    Eclipse M Overflow Box (800 GPH)
    $149.98

    Earn 745 Reward Points Earn 1,490 Reward Points

    $149.98
  13. Eclipse L Overflow Box (1000 GPH)
    Eshopps
    Eclipse L Overflow Box (1000 GPH)
    $159.98

    Earn 795 Reward Points Earn 1,590 Reward Points

    $159.98
  14. PF-Nano HOB Overflow
    Eshopps
    PF-Nano HOB Overflow
    $89.98

    Earn 445 Reward Points Earn 890 Reward Points

    $89.98
  15. PF-300 HOB Overflow
    Eshopps
    PF-300 HOB Overflow
    $119.98

    Earn 595 Reward Points Earn 1,190 Reward Points

    $119.98
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