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Fish Tanks & Aquariums

When it comes to keeping your fish healthy and happy, it’s all in the tank! Luckily for you, OnBuy offers cold water, tropical and marine aquariums in all manner of shapes, sizes and styles, so you're sure to find exactly what you need to give your pets the best care possible among our vast selection of fish tanks. So, dive in and pick up the perfect tank for your finned friends now!

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Looking to buy Fish Tanks & Aquariums?

When it comes to our pets, albeit of the furry, four-legged, small or scaly kind, we only want what’s best for them. Providing the best care for your fish all starts with the right aquarium and, here on OnBuy, we’ve got all the tanks, accessories and equipment you need to make sure your little finned friends enjoy the happiest and healthiest life possible.

From large fish tanks for super-sized fish to compact models for smaller homes, decorative ornaments, habitat-enhancing plants, filtration equipment and more, you’re sure to find all the bits and bobs you need to transform your tank into a fish-friendly haven among our selection of fish tanks. 

What fish tank should I buy?

There are many different fish tanks out there, but three main types for domestic pets are cold water, tropical and marine. The specific needs of fish differ from species to species, so be sure to do a bit of research before setting your heart on a brand new tank to make sure you’re picking up the right one for your pets. 

If you're new to fish-keeping, we suggest looking at our selection of cold water aquarium kits. From rectangular tanks to that quintessential ‘globe’ shape, these pieces of kit usually come on the smaller side, ideal if you're limited on space or you're looking to add a more compact centrepiece to your room. Typically, these tanks come in a handy all-in-one container, comprised of everything you need to set up an aquarium in your home (apart from the fish!), making them the perfect option for beginners, be it for yourself or your little one. 

Tropical versus cold water fish tanks

If you’re a novice fish owner that’s looking for something a little more attention-grabbing (while still requiring very little maintenance), a tropical fish tank would be a great choice for you. The biggest difference between cold water and freshwater tropical aquariums is the water temperature, being roughly 20-degrees Celsius for cold water tanks and anywhere between 24-27-degrees Celsius for tropical aquariums.

It’s not overly difficult to maintain your tropical fish tank, but you will need to keep tabs of the water’s pH level (keeping around 6.6 and 7.8, depending on the species of your fish), replacing it regularly and cleaning the tank often. Tropical fish are some of the most beautiful pets you could keep, so it seems only fitting that they have an equally stunning home to match – that’s why OnBuy offers a whole variety of shapes, styles and feels to choose from, with something to suit every home and taste! 

For all those who have a little more experience keeping fish, you may want to try a marine (saltwater) aquarium. Saltwater fish require more care than freshwater fish, so you need to ensure you create the perfect environment for them, keeping regular tabs of specific chemical levels, gravity measurements, temperature and filtration systems to name but a few. While these pieces of kit do require a considerable amount of maintenance, they give you the opportunity to keep and appreciate a beautiful array of marine life that you simply couldn’t with a freshwater tank.

If you’re not too sure where to start, don’t fret: we’ve got you covered with our huge selection of marine tanks! From small marine fish tanks that are perfectly suited to species like the clownfish all the way up to large fish tanks for marine life that'll house your angelfish with no fuss, you can find exactly what you’re looking for here on OnBuy. 

Popular Brands in Fish Tanks & Aquariums

Living And Home
URBN Living
Daniel James
King British

Our most popular Fish Tanks & Aquariums

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