4800GPH Nano Aquarium Sump Package

4800GPH Nano Aquarium Sump Package Details

SKU: seamless-sump-1s4-1b Category:


The 4800GPH Small Seamless Sump® Package includes:

Select how you want your sock tub configured. Holes are numbered left to right.
Select how you want your sock tub configured. Holes are numbered left to right.
You can add an additional media basket to make your bio media filter a wet-dry system.
Each 125ML comes in a reusable mesh bag.
Extra 5L of Bio Media (+$49.95)
18W UV Serilizer (+$199.99)
Includes four barb couplings and two elbows.
Product total
Options total
Grand total

Height 22.13 in
Length 41.79 in
Depth 17 in
Max Volume

41.6 Gallons

Ideal Operating Volume

37.3 Gallons

Max Flow Rate

4800 GPH


Custom Aquariums

Aquarium Type

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Filter Socks



Freshwater and Saltwater

The 4800GPH Nano Seamless Sump® Package has a max flow rate of 4800 gallons per hour. The two H2Overflow® lines are the limiting factor for this package.

Sump Overflow Prevention

Our Siphon Stopper® is designed to break a back-siphon in case your pump fails or loses power. However, it is still possible to have 1/8″ to 1/4″ of back-siphon with a properly mounted Siphon Stopper®. Additionally, there is an estimated 1/2″ to 3/4″ of possible water from your H2Overflow® that will flow to the sump. Depending on the size of your aquarium this may be a few gallons or a lot of water.

In the worst case scenario you will need your sump system to absorb 1″ of water from your aquarium. 1″ is more than you will likely loose. However, as it has been said, “Plan for the worst, expect the best.”

When all this water starts rushing to your sump a little will come from the Siphon Stopper® and the majority will be from your overflows. All of the water will land in the Baffle Tub. If your reservoir tub is drilled for evaporation it can also help absorb the water from the aquarium. The larger 1-1/2″ tube between the Baffle Tub and the Reservoir Tub allows the water to move faster into the Reservoir Tub keeping your Baffle Tub from potentially overflowing.

The in the 150-240 Gallon Seamless Sump® Package the total amount of water that can be absorbed is around 2,800 cubic inches. The Baffle Tub and Reservoir Tub can absorb around 1,400 cubic inches each. For example, if you used this sump package on our 180* Gallon 24″H x 72″L x 24″D Aquarium Special an inch of water loss would be a little under 1650 cubic inches. This is more than the Baffle Tub could likely absorb on its own. Because, the Reservoir Tub only needs to absorb the extra 250 cubic inches to keep the Baffle Tub from overflowing it is very unlikely you will need the increased flow provided by the 1-1/2″ tube. However, with a larger aquarium that needs multiple Reservoir Tubs it may be needed.

High Flow Refugium

Another reason you may want to upgrade to the 1-1/2″ tubing is to increase the flow inside a refugium. If you have coral or anything else in your refugium that needs increased flow the 1-1/2″ upgrade will provide it. In the case of a high flow refugium you may want to look at running a 1/2″ overflow line directly from our StealthBox® to your refugium.

The Seamless Sump® Advantage

Seamless Sump® system by Custom Aquariums is one of the most modular, dependable, and expandable aquarium sumps on the market today. Even after years of using a package you can add more tubs to make it work with a larger tank. The tubs will last the rest of your life.

You can hose down and scrub your sump to your hearts content with out any need to worry about compromising any seams, glue or joints. Each tub is truly “seamless”!