Mon-Thurs 7am-5pm PST
Fri 7am-4pm PST

Questions about products, orders, shipping?
Contact us by call or email


A sump requires an aquarium overflow box or drilled tank to deliver water to the sump. Water drains from the fish tank to a filter sock, trapping waste. Water then flows through aquarium sump baffles to aerate water and trap waste. Then, an aquarium return pump sends water back to the display tank.

Fish tank sumps usually have several chambers, which may include a protein skimmer chamber, a refugium, or an auto top off (ATO) reservoir. Some sumps have adjustable baffles to set protein skimmer height. A submersible heater and any specialized filtration can be housed inside the sump, hidden from the display tank. Other options include probe holders, cable management, and silencing plates.

As a general rule, buy the largest sump that will sit inside the aquarium cabinet and matches your protein skimmer height requirements.


Klir 4 Inch Flow-Diverting Cap

Coming Soon!

Trigger Systems Sump - Sapphire 34 Inch


IceCap 15 Reef Sump
20% off



Trigger Systems Sump - Ruby 36 Inch


Trigger Systems Sump - Emerald 26 Inch


AquaMaxx AF-1 Automatic Filter Roller
Eshopps RS-75 Reef Sump
Trigger Systems Sump - Ruby 30 Inch


IceCap 36XL Reef Sump
20% off



Eshopps CUBE Nano Refugium
Trigger Systems Triton20C v2 Cube Sump - 20 inch
Somatic 90 Drain Cover
last chance
IceCap 36 Reef Sump
20% off



We use cookies to provide a personalized site experience. By continuing to use & browse this site, you agree to our Privacy Policy.