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Collection: 20 Gallon Fish Tanks

At Aquacadabra, we understand the importance of shopping according to your specific fishkeeping needs and, with our collection of 20 gallon fish tanks, you can easily find the right sized aquarium for your space. With a range of styles to choose from, each from trustworthy aquarium brands, shop medium sized fish tanks in the collection below.

30 products
View per page
Regular price
£219.99
Sale price
£219.99

In Stock

Regular price
£269.99
Sale price
£269.99

In Stock

Regular price
£462.99
Sale price
£462.99

Dispatched within3 - 4 days

Regular price
£382.99
Sale price
£382.99

Dispatched within3 - 4 days

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£367.99
Sale price
£367.99

Dispatched within3 - 4 days

Regular price
£602.99
Sale price
£602.99

Dispatched within3 - 4 days

Regular price
£359.99
Sale price
£359.99

Dispatched within3 - 4 days

New
Regular price
£359.99
Sale price
£359.99

Dispatched within3 - 4 days

New
Regular price
£359.99
Sale price
£359.99

Dispatched within3 - 4 days

New
Regular price
£359.99
Sale price
£359.99

Dispatched within3 - 4 days

New
Regular price
£359.99
Sale price
£359.99

Dispatched within3 - 4 days

Regular price
Sold out
Sale price
£445.00
Regular price
Sold out
Sale price
£445.00
Regular price
Sold out
Sale price
£445.00
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Sold out
Sale price
£249.00
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Sold out
Sale price
£445.00
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Sold out
Sale price
£344.99
Regular price
Sold out
Sale price
£239.99
The collection of 20 gallon fish tanks at Aquacadabra are suitable for a range of skill levels so, whether you're looking to set up your first fish tank or are a hobbyist looking to expand your collection, there's a aquarium for you in our collection. Choose from 20 gallon aquariums from leading fishkeeping brands including Superfish, Fluval and Aqua One and customise your purchase by selecting a colourway that suits your home. Looking for something smaller to start off with? Discover our range of 15 gallon fish tanks online.