Medium: 50-100L

Shop the best medium-sized aquariums for your fish

Medium-sized aquariums are the best options for beginner or experienced aquarists looking to keep several species of fish, without having to get a large-sized fish tank. They range from 50 to 100 litres (roughly 20 to 40 gallons) and can be a great addition to your space, as they provide more room for aquascapers to get creative with decorating the aquariums.

Medium-sized fish tanks are sold based on volume capacity, but they come in different shapes, sizes, and dimensions. This means that a 60-litre aquarium can come in two different sizes, one wider and another taller. This gives you the choice to pick one that suits your space and preference. It also allows you to explore and create beautiful aquascapes for your aquatic pets and plants.

When buying a medium-sized tank, first consider the space you have for it. Even if you have decided on the volume, the space will determine whether you are getting a longer or a wider dimension of the fish tank. Also, consider the kind of fish you want to keep and their swimming habits. Some may tend to swim deeper, while others swim across a wider range. Keep in mind the length you want them to grow to when choosing the tank.

Just like the small fish tank, medium-sized aquariums require some maintenance even though they are easier to clean and maintain. Don’t ignore them. Another tip to keep in mind is that your choice of filter plays a huge role in the health of the fish and plants. Select a filter that would work well for the volume and size of your tank. You should also avoid overfeeding your fish or overcrowding the tank, as this could lead to unclear, unhealthy water that could harm your fish.

Medium-sized aquariums are much larger than small fish tanks, and so, they offer more space for intricate designs and beautiful underwater gardens in the aquariums. Their generous sizes allow you to grow fish to bigger sizes and give an amazing aquatic display in your home or office. Check out our collection of medium-sized fish tanks and aquarium accessory sets that will help you set it up.

FAQs About Medium-Sized Aquariums

(1) What is the best medium-sized aquarium for a beginner aquarist?

For a beginner, a 75-litre aquarium is a good starting point. It allows you to consider a wider range of fish species, irrespective of their size, temperament, and swimming behaviors. It is also relatively easy to maintain, and you can get the AquaEL Aquarium Set Leddy 75 D&N 2.0 to give you the right accessories.

(2) What kind of fish can I put in a medium-sized aquarium?

With a medium-sized tank, you can keep more than one species of fish, including community fish that enjoy a lot of space. You can put rasboras, barbs, danios, mollies, tetras, guppies, and platies. Even bigger fish can be placed in the aquarium, provided that you do not put fish that can be aggressive towards each other.

(3) How do I maintain a medium-sized aquarium?

With the right accessories, a medium-sized aquarium is much easier to maintain than both a large and a small fish tank. With the right filters, sterilizers, air pumps, and the rest, all should go well with your aquarium. Have a monthly maintenance schedule where you clean the filter media, check all parts, and fix or replace any faulty parts.

(4) What is the best filter for a medium-sized fish tank?

The beauty of a medium-sized aquarium is that you can use almost any kind of filter. Internal filters work well, and so do the external and hang-on filters. However, hang-on filters can be a good blend of affordability and efficiency for a medium-sized fish tank. They are easy to use and have a high filtration power just suitable for a tank of up to 100 litres, with a high bioload.

(5) How many fish can I keep in a medium-sized aquarium?

To calculate how many fish to keep in your aquarium, use the one-inch per gallon rule. This rule says you can keep one-inch fish for every gallon (3.7 litres) of aquarium water. This means that a 75-litre aquarium can hold about 20 inches. This can be ten 2-inch fish, or twenty 1-inch fish, or five 4-inch fish, depending on what you want.