Sell Your Fish Tank in the US

Used fish tanks in the US typically sell for $27 to $200. Tanks are worth little empty but complete setups sell quickly, and a leak test is the most reassuring thing a seller can offer.

What fish tanks are worth in the US

Condition	Typical	What it means
New with Tags	$202	Unused, tags or seals intact
Like New	$172	Barely used, no visible wear
Good	$131	Light signs of use, complete and working
Fair	$91	Heavily used, or a described fault or missing part
For Parts	$50	Not working or incomplete, sold as seen

Guide ranges converted from sterling at the 2 August 2026 rate, not quotes — sellers set their own price. Grades are seller-declared; WishThrift does not inspect or verify them.

What lifts the price

Complete setups with filter, heater and light
Larger volumes, expensive new

What pulls it down

Chips at the corners, which risk failure
Missing lids and light units

Selling a fish tank in the US

Peer-to-peer payment apps dominate private sales, and buyers will usually offer one before they offer cash. Sales tax does not apply to a private sale between individuals.

Distances are the real constraint. State plainly whether you will ship or collection only, because a buyer three states away will otherwise ask.

Two practical things shape a US sale. Shipping is priced by dimensional weight as well as actual weight, so a light bulky item can cost far more to send than a heavy small one — measure the box before you quote. And meeting in person is common enough that many police departments now run designated safe-exchange areas in their car parks.

Working out what yours is worth

Fill it outdoors and leave it standing to test for leaks
Confirm the filter, heater and light work

Getting it ready

Inspect the internal silicone for lifting, discolouration or gaps at the corners.
Clean off limescale tide marks with an aquarium-safe method, and check the glass for scratches by feel as well as sight.

Photograph

The internal corner seams close up, showing the silicone
The base and edges, showing chips or scratches

Put in the description

Age of the tank and whether the seals have been water tested
Whether a lid, hood, light bar or stand is included

Volume and dimensions: “120L Glass Fish Tank, 100x40x40cm, Empty”. Say empty or bare in the title so buyers do not arrive expecting equipment — if yours includes filter and heater, it is a setup and belongs in the aquarium guide instead.

Steady year round with an autumn and January lift. Standard sizes sell within a couple of weeks; very large tanks are slower because few buyers have the floor for them.

It costs nothing to list

There is no listing fee, no selling fee and no commission, so the $202 a buyer pays is the $202 you keep. You and the buyer settle up and arrange the handover between yourselves; WishThrift does not hold the money or ship the item.

Where in the US

The United States is a big place and what sells well moves with it. These are the parts of the United States with their own page for fish tanks.

Common questions

Where can I sell a fish tank in the US?

List it free on WishThrift and deal with the buyer direct. There is no selling fee, so the whole amount stays with you. Peer-to-peer payment apps dominate private sales, and buyers will usually offer one before they offer cash. Sales tax does not apply to a private sale between individuals.

Have you tested it for leaks?

Fill it, wait, and report what happened. An untested old tank is worth far less than a tested one because the buyer is carrying all the risk.

What is the most common tank fault?

Perished or lifted silicone seals. Run a fingernail along the seams — any lifting means it needs resealing.

Do complete setups sell better?

Much better, because a beginner needs everything at once and a complete tank saves them sourcing each part.

More: how to sell a fish tank, what fish tanks are worth, or Pet Supplies across the United States.