Best Aquariums Deals Online in the UK (25 Deals Found)

Last Updated - 03/09/2026 Sort By:

Best Choice
OUKMAO

New
OUKMAO 10.5L Fish Tank Starter Kit, Glass Nano Aquarium with Filter and LED Light, Desktop Aquarium with Lid for Small F
All-in-One Design: This aquarium kit contains a tank measuring 30 cm long × 16 cm wide × 22 cm high, a wall-mounted filt

£49.99 £52.99
YISITONG

New
YISITONG Fish Tank, 3 Gallon Aquarium Starter Kit with Filter and LED Lighting (17 Color Choices), 360 View Aquarium for
【Multifunctional Aquarium Starter Kit】YISITONG 3-Gallon fish tank combines filtration, water circulation, LED lighting,

£49.99
New
DIVERSA Aquarium Fish Tank Standard & Bow Front ALL SIZES Real Guardian Glass!
This way, you will know exactly when to expect your Diversa Aquarium. Our aquariums, for example, are constructed with o

£210.99
Craftsboys

New
Craftsboys 9L Fish Tank, Nano Glass Aquarium, Upgrade Filter system and LED Light, for Freshwater & Marine, Filter Balls
COMPLETE KIT: Contains essential accessories for a 9L aquarium including glass tank, LED lighting, filter.

£36.99
New
Electric Aquarium Gravel Cleaner Fish Tank Vacuum Siphon Water Change Pump
Can also be used as a water siphon during aquarium water changes. Aquarium Water Change Pump & Gravel Vacuum Cleaner. Co

£10.50
VIVOHOME

New
VIVOHOME 9.5L Glass Fish Tank Starter Kit Smart Aquarium with Auto Feeder
Anytime & Anywhere: With the APP, you can remotely control lighting, pump speed, feeder schedules, while tracking water

£79.99
Best Value
Swell UK

New
Swell Aquarium 60cm Tropical Freshwater LED Fish Tank Kit 54ltrs
54 litre fish tank suitable for tropical and coldwater fish

£95.29
Refurbished
CO2 Carbon Dioxide Fire Extinguisher 2kg 5kg Fish Tanks Aquariums, Fire Training
CO2 Carbon Dioxide Fire Extinguisher 5kg, CE, BSi Kitemarked, Wall Bracket, Horn. 2kg CO2 Carbon Dioxide Fire Extinguish

£16.49
Diversa

New
Diversa Aquarium Professional Fish Tank - Real Glass, Standard Rectangle AQUARIUM ONLY - 45L (50x30x30cm)
Premium Quality Aquarium - Diversa offers a high-quality glass aquarium made with Guardian Glass, ensuring durability an

£49.95
New
Electric Gravel Vacuum Cleaner Pump Aquarium Fish Tank Water Change Siphon
A hose (not included) can be connected onto the outlet, and water can then be pumped to a drain or bucket. The item is v

£34.99
Fluval

New
Fluval Flex 2.0 Black Aquarium Kit 57 L
Unique, vertically bent glass aquarium design

£129.99
Craftsboys

New
Craftsboys 4.5L Aquarium Starter Kits, Small Arcrylic Betta Fish Tank with Led Lights and Backwall Filter (Black)
Tips: for keeping betta fish, you need to prepare decorations and hide space to reduce water flow velocity.

£26.99
New
Fish Tank Aquarium Tropical Coldwater Starter Kit LED Light Pump Set 7L 14L 28L
Actiaspet Fish Tank Aquarium Tropical & Coldwater Starter Kit LED Light & Filter Pump 7L 14L 28L. 1 × Aquarium Tank (7L,

£49.99
OUKMAO

New
4.5L Fish Tank Starter Kit for Betta Fish, Acrylic Aquarium with LED Light & Built-in Rear Filter, Small Desktop Fish Ta
Durable Material: This beginner aquarium kit is crafted from shatterproof, high-clarity plastic. It remains crystal clea

£29.99
New
FLUVAL PROVAC POWERED AQUARIUM GRAVEL CLEANER SPOTLIGHT LED AQUARIUM FISH TANK
Keep your aquarium clean with theFluval ProVac range, designed to make routine aquarium maintenance quicker and easier.

£49.50
1ZIZIFA8

New
Small Glass Aquarium Tank 16L with Filter and Light, All-in-One Desktop Glass Fish Tank Kit with Pump for Goldfish, Bett
【All-in-One Starter Kit】 This 16-litre glass aquarium kit comes with everything you need to get started: a powerful 3-st

£41.99
New
LID ONLY For Diversa Aquarium Standard Rectangle - All Sizes Available
(Sizes given are sizes of aquarium the lid will cover). Properly selected light is one of key factors deciding whether y

£119.95
Used
Aquarium Accessories Bundle X5.
The Aquarium Accessories Bundle X5 includes five essential items for maintaining a healthy and vibrant aquarium environm

£20.43
Used
Aquarium Accessories Bundl X 4
The Aquarium Accessories Bundle X4. includes 1. filter. 2 air bubble 3. feeder. 4 scissor and tank cleaning.

£20.43
New
Aquarium Fish Tank Kit LED Light Pump Tropical Coldwater Beginner Set 7L 14L 28L
Actiaspet Fish Tank Aquarium Tropical & Coldwater Starter Kit LED Light & Filter Pump 7L 14L 28L. 1 × Aquarium Tank (7L,

£39.99
New
Electric Gravel Vacuum Cleaner Pump Aquarium Fish Tank Water Change Siphon UK
Specification: Material: ABS Battery Type:2X C (Not Including) Package Including: 1x Integrated Motor 3x Telescopic Duct

£11.99
New
43L Fish Tank, Glass Aquarium with Protective Base Mat, 50 x 30 x 30 cm
This can leave your space feeling uninspired. This tempered glass tank allows you to build your dream underwater world f

£34.99
New
Swell Magnetic Algae Cleaner for Aquarium Fish Tank Glass
Swell Floating Magnetic Algae Cleaning Magnet for Aquarium Fish Tank Glass Tool. Our range of Swell Floating Algae Magne

£9.99 £11.99
New
FishLogic Nitrate Removal system for aquariums, fish, discus, tank filling water
FishLogic by FilterLogic Nitrate Removal System.

£35.95
New
API 800 Test Freshwater Aquarium Water Master Test Kit
Contains one API FRESHWATER MASTER TEST KIT 550-Test Freshwater Aquarium Water Test Kit. Cat Litter. Kitten Food (2-12 M

£27.86 £29.99

25 Aquariums deals are available from: Amazon, eBay stores, starting from £9.99.
The biggest discount we found is 6% on OUKMAO 10.5L Fish Tank Starter Kit, Glass Nano Aquarium with Filter and LED Light, Desktop Aquarium with Lid for Small Fish, Shrimp and Aquascape DIY, 30cmx16cmx22cm at Amazon.
The lowest price we found is £9.99 while the highest is £210.99.
Prices for the best Aquariums deals average at £51.41.
Last updated on September 3, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Aquariums.