For Sale USA

20 gallon tank

4

20 gallon tank for sale on largest auction and classifieds sites

Home / Fish & Aquariums / 20 gallon tank refurbished & used for sale | For Sale USA
Gallon heavy duty - gallon,

Gallon heavy duty - gallon,

$19.95
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Refugium kit gallon - 20,

Refugium kit gallon - 20,

$84.95
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Gallon 80l blue - 20,

Gallon 80l blue - 20,

$158.88
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Gallon high tall glass - gallon, high/tall

Gallon high tall glass - gallon, high/tall

$25.00
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Gallon tank with - tank,

Gallon tank with - tank,

$80.00
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Gallon long aquarium lid - gallon,

Gallon long aquarium lid - gallon,

$39.99
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Top fin led aquarium hood - top,

Top fin led aquarium hood - top,

$39.00
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Waste oil drain tank portable - waste,

Waste oil drain tank portable - waste,

$92.99
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Gallon high rimless - gallon,

Gallon high rimless - gallon,

$54.47
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Aqua culture gallon glass - aqua,

Aqua culture gallon glass - aqua,

$69.97
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Gallon fish tank - 20, with

Gallon fish tank - 20, with

$48.35
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Gallon reverse osmosis - 20,

Gallon reverse osmosis - 20,

$280.00
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Tetra aquarium gallon - 20,

Tetra aquarium gallon - 20,

$132.99
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Classic trucks fuel tank - cj,

Classic trucks fuel tank - cj,

$274.99
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Gallon waste oil drain - drain, tank

Gallon waste oil drain - drain, tank

$171.46
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Jegs parts washer gallon - washer, [20-gallon

Jegs parts washer gallon - washer, [20-gallon

$169.97
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Gallon 80l fuel cell tank - 20,

Gallon 80l fuel cell tank - 20,

$129.91
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Gallon glass aquarium - glass,

Gallon glass aquarium - glass,

$92.99
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Uimoso gallon portable fuel - uimoso,

Uimoso gallon portable fuel - uimoso,

$143.99
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Gallon fish tank - gallon,

Gallon fish tank - gallon,

$43.59
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Aquarium lid gallon high - aquarium,

Aquarium lid gallon high - aquarium,

$21.99
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275 330 gallon ibc tote - 330,

275 330 gallon ibc tote - 330,

$202.70
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Gallon rectangle acrylic - gallon,

Gallon rectangle acrylic - gallon,

$40.00
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Custom solid polycarbonate - custom,

Custom solid polycarbonate - custom,

$110.00
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Lifewithpets gallon long - 20,

Lifewithpets gallon long - 20,

$25.99
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Colorfusion aquarium gallon - colorfusion,

Colorfusion aquarium gallon - colorfusion,

$158.17
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Aqua culture gallon fish - culture, 20

Aqua culture gallon fish - culture, 20

$40.00
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Aquarium air pump for - for, fish

Aquarium air pump for - for, fish

$13.09
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Jegs fuel tank - jegs, 1961-64

Jegs fuel tank - jegs, 1961-64

$124.99
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Gallon waste oil drain - 20,

Gallon waste oil drain - 20,

$103.54
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Gallon waste oil drain tank - waste,

Gallon waste oil drain tank - waste,

$90.19
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Gallon black aluminum - gallon,

Gallon black aluminum - gallon,

$169.99
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5gallon 20l 2pcs - jerry, can

5gallon 20l 2pcs - jerry, can

$66.29
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Lund boat gallon tank - 20,

Lund boat gallon tank - 20,

$129.32
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Colorfusion aquarium gallon - aquarium,

Colorfusion aquarium gallon - aquarium,

$158.17
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Gallon fish tank stand - gallon,

Gallon fish tank stand - gallon,

$49.99
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Gallon water storage - 20,

Gallon water storage - 20,

$185.00
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Fuel pump assembly gas 20 - assembly, w/20

Fuel pump assembly gas 20 - assembly, w/20

$48.79
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Jegs portable parts washer - portable,

Jegs portable parts washer - portable,

$239.99
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Gallon aluminum fuel cell - aluminum,

Gallon aluminum fuel cell - aluminum,

$167.22
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For jeep wrangler 4 0l - for,

For jeep wrangler 4 0l - for,

$49.77
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Gallon fresh gray - 20,

Gallon fresh gray - 20,

$109.99
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Wellmate well pressure - wellmate,

Wellmate well pressure - wellmate,

$389.00
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Gallon gas tank - gas, kit

Gallon gas tank - gas, kit

$242.96
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Sturdy metal fish tank stand - metal,

Sturdy metal fish tank stand - metal,

$72.19
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Lot healthy guppy grass - ,

Lot healthy guppy grass - ,

$55.00
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Gallon fresh water - gallon,

Gallon fresh water - gallon,

$289.99
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Top fin led - led, aquarium

Top fin led - led, aquarium

$41.99
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Restoparts gallon fuel - 20,

Restoparts gallon fuel - 20,

$130.50
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Aquarium stand gallon - 20,

Aquarium stand gallon - 20,

$72.39
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New amtrol well - new, well-x-trol

New amtrol well - new, well-x-trol

$319.99
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Glass aquarium top fits - glass,

Glass aquarium top fits - glass,

$39.12
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Gallon fuel tank - gallon, with

Gallon fuel tank - gallon, with

$138.99
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Gallon fish tank - gallon,

Gallon fish tank - gallon,

$125.99
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Aquarium lid polycarbonate - aquarium,

Aquarium lid polycarbonate - aquarium,

$69.96
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2pcs jerry can gallon - can, 20l

2pcs jerry can gallon - can, 20l

$54.98
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Aquarium lid gallon - aquarium,

Aquarium lid gallon - aquarium,

$37.99
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Color complete gallon fish - color,

Color complete gallon fish - color,

$158.17
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Gallon fish tank stand - 55-75,

Gallon fish tank stand - 55-75,

$109.99
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Gallon fish tank stand - fish,

Gallon fish tank stand - fish,

$46.14
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Insulated well pressure tank - well,

Insulated well pressure tank - well,

$62.70
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Aquaneat aquarium air pump - pump,, 20

Aquaneat aquarium air pump - pump,, 20

$10.35
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Aquarium stand for 29 - for, 20-29

Aquarium stand for 29 - for, 20-29

$72.19
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Vividwood gallon fish - vividwood,

Vividwood gallon fish - vividwood,

$161.99
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Fuel pump assembly gas 20 - gas, w/20

Fuel pump assembly gas 20 - gas, w/20

$72.49
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Gallon aluminum polished - gallon,

Gallon aluminum polished - gallon,

$124.30
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Lightweight aluminum race - lightweight,

Lightweight aluminum race - lightweight,

$129.81
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Gallon fuel tank 52002633pl - 20,

Gallon fuel tank 52002633pl - 20,

$309.59
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Aqueon fish tank aquarium - aqueon,

Aqueon fish tank aquarium - aqueon,

$44.95
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Waste oil drain - drain, tank

Waste oil drain - drain, tank

$137.81
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Gallon 20l gasoline army - 20l,

Gallon 20l gasoline army - 20l,

$29.98
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Gallon 80l fuel cell - gallon,

Gallon 80l fuel cell - gallon,

$129.20
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For jeep wrangler - jeep,

For jeep wrangler - jeep,

$36.83
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Aquarium stand 29 gallon - aquarium, 20-29

Aquarium stand 29 gallon - aquarium, 20-29

$110.23
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Gallon air operated waste - gallon,

Gallon air operated waste - gallon,

$109.99
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Gallon gas tank - 20-gallon, w/

Gallon gas tank - 20-gallon, w/

$208.97
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Snughome gallon fish tank - fish,

Snughome gallon fish tank - fish,

$75.46
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Aquaneat sponge filter with - sponge,

Aquaneat sponge filter with - sponge,

$10.79
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Gallon red coated - 20,

Gallon red coated - 20,

$143.99
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Jegs fuel tank - tank, for

Jegs fuel tank - tank, for

$89.79
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Xtremepowerus oil drain - oil,

Xtremepowerus oil drain - oil,

$119.95
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Gallon aquarium stand with - 39,

Gallon aquarium stand with - 39,

$64.19
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Gallon high - high/55, glass

Gallon high - high/55, glass

$37.99
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Crystal rimless aquarium - crystal,

Crystal rimless aquarium - crystal,

$238.09
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Gallon fish tank stand - gallon,

Gallon fish tank stand - gallon,

$55.20
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Ultra quiet mini - ultra, fish

Ultra quiet mini - ultra, fish

$11.05
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Gallon tank stand with - gallon,

Gallon tank stand with - gallon,

$77.99
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Universal black gallon fuel - black,

Universal black gallon fuel - black,

$133.97
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Tetra tetrafauna gallon - tetrafauna, 20-gallon

Tetra tetrafauna gallon - tetrafauna, 20-gallon

$179.99
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Uimoso gallon portable fuel - uimoso,

Uimoso gallon portable fuel - uimoso,

$149.99
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Gallon fish tank filter up - 20,

Gallon fish tank filter up - 20,

$46.40
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Gallon fresh gray water - 20, /

Gallon fresh gray water - 20, /

$134.99
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Gallon 20l gasoline army - 20l,

Gallon 20l gasoline army - 20l,

$29.98
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Hygger low noise aquarium - hygger, low-noise

Hygger low noise aquarium - hygger, low-noise

$24.99
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Gallon fuel cell tank - cell,

Gallon fuel cell tank - cell,

$266.99
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Gallon low profile - 20,

Gallon low profile - 20,

$133.56
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Looking for more 20 gallon tank?

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📊96 listings · from $10.35 · avg $110.74

Browse 96 20 gallon tank listings currently in our index. Prices range from $10.35 to $389, with an average of $110.74. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about 20 gallon tank →

Try this: 40 gallon tank | 55 gallon reptile tank | 55 gallon terrarium | 75 gallon acrylic aquarium | 75 gallon fish aquarium | 75 gallon tank | acropora coral | 40 gallon breeder aquarium | 55 gallon fish tank setup | corydoras

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Everything you need to know about 20 gallon tank

Whether you are looking for a brand-new or second-hand 20 gallon tank, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $10.35, while premium listings can reach $389 — giving you a wide budget spread to work with. The average price of $110.74 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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