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10 Best Fish Tanks in the UK in 2021 – Reviews & Top Picks

Chris Dinesen Rogers

Oak Aquarium Fish Tank in the living room

Surprisingly, fish ownership isn’t as popular in the UK, with only 5% of households owning tanks. Nevertheless, having an aquarium offers several health benefits that let people get close to Nature. You’re in luck if you’re considering getting one for yourself. We did the heavy lifting and research to determine which products stand out as the best fish tanks.

We discussed the things to look for in an aquarium, along with some tips about setting one up in your home. We’ve also included detailed reviews to help you make the best choice for you. Our goal is to make this purchase equally as stress-free as the relaxing properties you’ll enjoy once you set it up and running, stocked with fish.

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A Quick Comparison of Our Favorites

Image Product Details
Best Overall
Winner
Tetra Aquarium Tank Tetra Aquarium Tank
  • Complete kit
  • Excellent value
  • Crystal clear glass
  • Best Value
    Second place
    Diversa Aquarium Diversa Aquarium
  • Free mat
  • Excellent value
  • Crystal clear glass
  • Premium Choice
    Third place
    Aqua One Oak Tank Aqua One Oak Tank
  • Sturdy frame
  • Lovely design
  • Accessories in the package
  • Aqua Ciano 60 Aquarium Aqua Ciano 60 Aquarium
  • Colour-coordinated piece
  • Accessories included with the package
  • Excellent value
  • All Pond Solutions Aquarium All Pond Solutions Aquarium
  • Unobstructed view
  • Thick glass sides
  • Low-iron content
  • The 10 Best Fish Tanks – Reviews & Top Picks 2021

    1. Tetra Aquarium Starter Line Tank – Best Overall

    Tetra Aquarium Starter Line Tank

    Size: 54 L
    Material: Glass
    Shape: Rectangular
    Accessories: Filter, cartridge, LED light and heater

    The Tetra Aquarium Starter Line Tank is our pick for the best overall fish tank. The 54-litre size is an ideal way to begin in this hobby. The kit also includes a filter with cartridges, a light and heater. Purchase a water conditioner, gravel and decor to get ready to add your fish. The tank is well-made and built to last. It’s a brilliant value for the price.

    The kit looks great, with everything fitting in with the theme. We can see it as a fun gift for a child just starting out and wanting to get up and running fast.

    Pros
    • Complete kit
    • Excellent value
    • Crystal clear glass

    Cons

    • Continental plugs


    2. Diversa Aquarium – Best Value

    Diversa Aquarium Professional Fish Tank

    Size: 12–200 L
    Material: Glass
    Shape: Rectangular
    Accessories: n/a

    The Diversa Aquarium earned high marks for the best fish tank for the money. If you just want a tank, this one is worth a look. It comes in a wide variety of sizes to get the right one for your space. The product comes with a mat to protect the bottom of the glass. It’s well-made with relatively thick sides and double silicone joints. Our only gripe is the black colour, which we thought was distracting.

    The price is affordable, especially if you want to build your aquarium with your picks for the other essentials. We liked that you have a decent selection of sizes.

    Pros
    • Free mat
    • Excellent value
    • Crystal clear glass

    Cons

    • Distracting black silicone


    3. Aqua One Oak Fish Tank – Premium Choice

    Oak Aquarium Fish Tank

    Size: 300 L
    Material: Glass, oak cabinet
    Shape: Rectangular
    Accessories: Cabinet, canister filter, heater and LED light

    The Aqua One Oak Fish Tank isn’t for everyone, if just for the price. However, it’s more than an aquarium. It’s a piece of high-quality furniture. The oak cabinet is convenient, with four drawers and four cabinets for storing your supplies. The package also includes a heater, canister filter, and LED light. All have specs that are appropriate for the size of the tank.

    The accessories are of decent quality, although the filter is not the best choice because of the availability of replacement cartridges.

    Pros
    • Sturdy frame
    • Lovely design
    • Accessories in the package

    Cons

    • Difficult to assemble


    4. Aqua Ciano 60 Aquarium With the Stand

    Ciano 60 Tropical Glass 2ft Aquarium & Stand

    Size: 58 L
    Material: Glass, plastic, engineered wood
    Shape: Rectangular
    Accessories: Stand, siphon, filter, heater, LED light

    Aqua Ciano 60 Aquarium With the Stand takes the concept of a kit one step further by throwing in a stand. There’s also a heater, siphon and LED light to complete the package. Everything is colour-coordinated in this modern style piece. This kit is ideal for beginners who want the essentials in one purchase. The two-part piece is the proverbial double-edged sword if it doesn’t fit with your decor.

    It’s worth noting that Amazon can’t deliver this tank setup outside of the UK Mainland. The LED light is energy-efficient. The hood has a feeding hatch, which we like to see with these products.

    Pros
    • Colour-coordinated piece
    • Accessories included with the package
    • Excellent value

    Cons

    • So-so filter


    5. All Pond Solutions Clear Glass Aquarium

    All Pond Solutions 60 : 80cm Ultra Clear Glass Aquarium Fish Tank

    Size: 28–280 L
    Material: Glass
    Shape: Rectangular
    Accessories: n/a

    The All Pond Solutions Clear Glass Aquarium is another barebones option if you only want a tank and not all the other goodies. The standout feature is its thicker walls of all sizes. It’s more than we typically see in these products. As you may expect, it’s heavier as a result. That can make larger sizes more challenging to move. The edges are braceless and rimless, giving an unobstructed view.

    The construction left some silicone residue, which you’ll have to clean up if you’re the fussy type. While the view is clear, the excess is distracting.

    Pros
    • Unobstructed view
    • Thick glass sides
    • Low-iron content
    • Easy to clean

    Cons

    • Spendy
    • Heavy


    6. biOrb Tube Aquarium

    biOrb Tube 35L Aquarium

    Size: 35 L
    Material: Acrylic
    Shape: Cylindrical
    Accessories: LED light, air pump, heater, filter, cartridge, air stone

    The biOrb Tube Aquarium is probably a fitting name for this fish tank. That describes its unusual shape. While it’s not the best choice for the fish, it is a space saver that gives viewers a 360-degree view. It’s the only acrylic product on our list. The shape is one of the advantages of this material since you can get a fish tank in any form you’d like because of its workability.

    The tank includes the accessories you typically see with kit products, including the light heater and filter. As a decorative piece, it scores full marks. The low surface area makes it a choice for a few fish that use multiple layers in an aquarium.

    Pros
    • 360-degree viewing
    • Space saver

    Cons

    • Expensive
    • Low surface area ratio


    7. Marineland Aquarium Kit

     

    Marineland Portrait Glass LED aquarium Kit

    Size: 19 L (5 gallons)
    Material: Glass
    Shape: Column
    Accessories: LED lighting system, filter

    The Marineland Aquarium Kit has many features that you’d expect in a decorative product, starting with the lighting. It has both day and night LEDs to match the mood with the time of the day. The product is well designed with a beautiful display that hides the business end of the tank. You just get to enjoy the fish and plants. The filter is more than we’d expect with this type of tank. That’s a good thing for your fish.

    This aquarium is a decent choice if you just want to keep a couple of goldfish or a betta. The setup is more than adequate to support the conditions healthy for your pets.

    Pros
    • Three-stage filtration
    • Attractive design
    • Space-saver size

    Cons

    • Small size
    • US plug
    • So-so accessories


    8. allpondsolutions Nano Tropical Fish Tank

    allpondsolutions Nano Tropical Fish Tank

    Size: 7–72 L
    Material: Glass
    Shape: Rectangular
    Accessories: LED lighting, air pump, tray filter

    The allpondsolutions Nano Tropical Fish Tank is a brilliant choice if you want a complete setup at an affordable price. The design is attractive, with the curved sides adding a nice touch. It has both a mechanical and biological filter for optimal water quality. There’s also an LED light that has a pleasing glow. The hood includes a small feeding hatch to minimise evaporation loss and keep the fish inside the tank.

    The product comes in several colours to match the tank with the room. It’s an excellent feature when you combine it with its shape.

    Pros
    • Curved glass
    • Colour choices
    • Easy access

    Cons

    • No heater


    9. Superfish Start 30 Aquarium Tropical

    Superfish Start 30 Aquarium Tropical

    Size: 25 L
    Material: Glass
    Shape: Rectangular
    Accessories: Light, heater, net, water conditioner, filter and thermometer

    The Superfish Start 30 Aquarium Tropical takes the start package one step further with more accessories than you usually see in these products. You have the usual add-ons, such as filter and heater. This one adds a thermometer, water conditioner, and a net. Granted, that the latter is rubbish, but it will suffice. The other gripe is that the construction of the hood is proprietary, making a replacement hard to find.

    On a positive note, we liked that the product includes 50% recycled materials, making it an eco-friendly purchase. Its primary purpose is for a starter setup for someone new to the hobby.

    Pros
    • Complete with many extra pieces
    • 50% recycled materials
    • Excellent value

    Cons

    • Less surface area for the size
    • Ugly black silicone
    • Proprietary size


    10. Fluval Flex Curved Glass Fish Tank

    Fluval Flex Curved Glass LED Nano Aquarium

    Size: 57 L
    Material: Glass
    Shape: Rectangular
    Accessories: Cover with light, heater, air pump, filter

    The Fluval Flex Curved Glass Fish Tank is more of a novelty than anything else. Its shape tells you that much. It’s rectangular but higher than it is wide. That compromises the surface area available for gas exchange. The appearance is interesting, with a bowed-out front that brings the aquarium experience closer to you. It includes a biological filter to keep the water within healthy parameters, although the water flow is swift.

    It’s a decent value for the money. The light is adjustable with different brightness levels and colours to fit the theme of your decor. The setup does an excellent job of keeping the mechanical stuff hidden.

    Pros
    • Decorative appearance
    • Fish colour enhancement lighting

    Cons

    • Not ideal for gas exchange
    • Pricey


    Buyer’s Guide

    Buying an aquarium takes some thought not only because of the money but also its role in other aspects of the hobby. It can determine what fish you can get, where you’ll be able to put it, and how much maintenance you’ll need to do. It’s also a purchase that you only want to make once. Swapping out a new one is a daunting task, to say the least. Therefore, it’s best to think about your choice carefully. Things you should consider include:

    • Tank size and shape
    • Material
    • Weight
    • Placement

    Tank Size and Shape

    What size tank you should get is the most important decision you’ll make. We suggest avoiding getting one less than 34 L unless you’re just going to get just a few fish.  It’ll limit the number you can get and increase your maintenance. However, consider the space where you want to put it. You’ll need access to the aquarium, both front and back. Of course, you want to put it someplace where you can enjoy it, too.

    Size comes into play with the shape. A rectangular tank is ideal because it maximizes the amount of surface area for oxygen exchange. Square or odd-shaped aquariums are often lacking in this regard. Again, it falls back onto the health of your fish and the maintenance. However, keep in mind that a bigger tank means everything else is going to cost more.

    Material

    The two primary materials that you’ll see are glass and acrylic. The advantages of the former are that it’s resistant to scratching and are generally more affordable. The latter is lighter and comes in various shapes. However, these tanks can scratch easily and will cost you more. That makes glass the better choice since it’ll keep its clarity for its lifetime.

    On the downside, glass is heavy, which will play a role in our next topic. It can also chip or crack if you’re not careful. That’s a problem because the damage becomes a weak point. If it happens, you’ll have to replace the tank. Otherwise, it will eventually leak or break.

    Weight

    Weight comes to the forefront when considering where to place your tank. There’s its weight plus that of the substrate, heater, filter, and most importantly, the water. That 34-litre aquarium will hold about 34 kg. It can easily tip the scales at 50 kg when you’ve filled it up with the other stuff. That’s a critical consideration when it comes to the location.

    There isn’t a definitive formula for the number of fish per litre or imperial gallon. Too many variables can affect a healthy or unhealthy living environment, such as the fishes’ metabolism, adult size, and water quality requirements.

    However, it still boils down to the size of the space where you want to put it. Questions about what species to get can come later. For now, have an idea whether you want a tropical community tank, cichlid setup, or saltwater reef aquarium.

    actual use of biOrb Tube 35L Aquarium

    Placement

    Another critical aspect of the tank’s placement is access to electricity. You should also put it someplace out of drafts and away from heating/cooling registers. Remember that most fish prefer at least 12 hours of light every day. That can affect whether you’ll place your tank in a home office or bedroom.

    divider-fishbowl

    Final Thoughts

    After going through our reviews, the Tetra Aquarium Starter Line Tank came out as the best overall product. It’s a kit that includes the basics in a decent-looking package. That makes it an excellent choice for the beginner. The Diversa Aquarium offers an incredible value if you only need a tank and nothing else. There is a decent selection of sizes to fit almost anyone’s needs.

    Fortunately, you’ll find many options if you’re looking for just the tank or the works to get started. The latter makes up some of the most popular choices.

    Chris Dinesen Rogers

    Chris has written on a variety of topics since 2009. Her motto with all of her writing is “science-based writing nurtured by education and critical thinking.” She specializes in science topics, with a special love for health and environmental topics, and of course, pets of all shapes and sizes. Chris lives happily with her hubby and three cats in the land of 10,000 lakes, writing, wining, and boating as much as she can. She and her husband, Norm, were awarded the State of Kentucky Colonel Honor for their restoration work at Mammoth Cave National Park. Chris’s current passion is wine. She has her WSET 1 and 2 certifications and is currently pursuing her Certified Wine Specialist Award (CSW).