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Eshopps PF-800 Overflow Box, 75-125 gal tank, Single

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Eshopps PF800 Overflow Box, 75-125 gal tank, Single


Model Dimensions Bulkheads U-Tubes Recommended Tank Size Max Flow Rate
PF-Nano 4" x 2.5" x 8" One 3/4" One 10-20 Gallons 200 GPH
PF-300 6" x 3" x 10"  One 1" One 35-75 Gallons 300 GPH
PF-800 8" x 3" x 10" One 1" One 75-125 Gallons 800 GPH
PF-1000 9" x 3" x 10" Two 1" Two 125-150 Gallons 1000 GPH
PF-1200 10" x 3" x 10" Two 1" Two 150-200 Gallons 1200 GPH
PF-1800 12" x 4" x 10" Two 1.5" One 200-300 Gallons 1600 GPH

Eshopps PF800 Overflow Box, 75-125 gal tank, Single

The overflow box effectively transport aquarium water to under cabinet sumps, refugiums, or wet/dry filters. These high quality overflow boxes features bulkhead fittings for secure and convenient installation. The U-tube style compact overflow boxes are designed to fit between your tank and your wall to maximize space usage in your aquarium setup. With only 3 in. required between your tank and your wall, these boxes are excellent for optimizing space. Each box includes everything required to attach it to your system. 


  • U-tube
  • Cylinder Foams
  • Nylon screw and wing nuts
  • Pre-filter Box
  • PF-Nano  has 3/4" bulkhead 
  • PF-300 and PF-1200 has 1" bulkheads
  • PF-1800 has  1.5” Bulkhead


Item # Model Dimensions Tank usage
10100 PF-Nano 4"x2.5"x8" 10-20g Nano
11000 PF-300 6"x3"x10" 30-75g Single
11005 PF-800 8"x3"x10" 75-125g Single
11010 PF-1000 9"x3"x10" 125-150g Dual
11015 PF-1200 10"x3"x10" 150-200g Dual
11020 PF-1800 12"x4"x10" 200-300g Dual
Product code: 1796
Item No. OF-ES-PF800

3 Reviews

  • 5
    Works great on 56 gallon column tank

    Posted by Curt on Jan 17th 2018

    Over sized everything for my 56 gallon column tank and so far am not disappointed.

  • 5
    Works great on a 135g Oceanic

    Posted by Todd on Feb 15th 2012

    Quiet and easy. Works great. Your local hardware store might not have the bulkhead adapter be warned - its a large male end.<br><br>I purchased this for a 75g tank then upgraded to a 135g Oceanic.<br><br>Was hesitant to drill the 135, so decided to use the overflow box. Have had no problems with it. Tested return pump unplugged multiple times and fills the sump with no issues. This box can handle the load easily.

  • 4
    Two overflows not needed in my tank

    Posted by jody on Apr 9th 2011

    They were out of stock on single overflow so I purchased model with 2 siphon chambers. This is not needed on 125 gallon tank. I have a<br>90 gallon and I blocked off 1 chamber so only one siphon and hose is needed. It cost .75 for fittings at<br>home depot. The overflow is Now is perfect for my tank. Do not like the pre filter material.<br>not fine enough to remove small particles. I use air filtration material which catches<br>everything. It is a well made overflow but one siphon model is the way to go.