The Fish Guru

Small but Stunning: The Benefits and Challenges of Owning a 35-Gallon Fish Tank

Are you looking to add an aquarium to your home or office but don’t have a lot of space to spare? A small tank may be the perfect solution for you.

In this article, we will discuss the benefits and challenges of owning a small tank. Benefits of a Small Tank:


One of the undeniable benefits of a small tank is that it takes up less space.

If you live in a small apartment or have limited room in your office, a small tank can still provide the joys of owning an aquarium without overcrowding your space. You can easily fit a small tank on a desk, counter, or shelf.


Another benefit of a small tank is that it is more cost-effective. Smaller tanks require less equipment and fewer supplies, which means fewer bills.

Additionally, smaller tanks require less energy to maintain the water temperature, which saves on energy costs. Aesthetic:

A small tank can still be visually appealing.

In fact, small tanks can be more charming because they can be more intricate in design. You can create a beautiful work of art that fits in seamlessly with your space with a smaller tank.

Furthermore, because it requires less maintenance, you can spend more time admiring your aquatic creation. Maintenance:

Small tanks also require less time and effort to maintain.

Cleaning and water changes are much easier and can be done more quickly. Because there are fewer fish and less water, there is less waste to manage, which means less work for you.

Challenges of a Small Tank:

Finding Equipment:

One of the challenges of a small tank is finding the right equipment. Many aquarium supplies are geared for larger tanks and may not be compatible with smaller tanks.

It may take a little more research to find the appropriate equipment that is specifically designed for a small tank. Stability:

Another challenge of a small tank is maintaining stability.

Small tanks are more susceptible to rapid changes in water temperature and quality, which can harm the fish and other aquatic life. It is therefore crucial to monitor the water carefully and consistently to maintain a healthy environment.

Limited Livestock:

Finally, a small tank can only accommodate a limited number of fish and other aquatic life. It is important to research species that are appropriate for small tanks to ensure that they thrive in their environment.

Overcrowding is a common problem with small tanks, and it can lead to poor health and high stress levels in your fish. Conclusion:

In conclusion, a small tank can provide great benefits if you have limited space, budget, and time.

The smaller size can save you money on bills and maintenance, while still providing an aesthetically pleasing aquatic environment. However, it is crucial to have a deep understanding of the aquarium’s specific needs, given the challenges associated with smaller aquariums.

Ultimately, with proper care and attention, a small tank can provide you with a peaceful, serene escape and enjoyable experience. Are you looking to set up a 3.5-gallon fish tank and wondering what your options are?

With a tank this size, you’ll need to be mindful of the number and type of fish you choose to keep. In this article, we will discuss community tank options, suitable livestock, and keeping betta fish in a 3.5-gallon tank setup.

Community Tank Options:

One option for a 3.5-gallon fish tank is to create a community tank. Mollies, tetras, and guppies are all good options for community tanks in small aquariums.

However, it is essential to remember that since these tanks are small, you need species that are compatible and non-aggressive. A general rule of thumb is to keep one inch of fish per gallon in small aquariums.

Suitable Livestock:

In a 3.5-gallon tank, you must choose your livestock wisely. Small freshwater invertebrates are an excellent option for this size of aquariums.

Shrimp, snails, and crabs are all good choices and they won’t overcrowd the tank. Small schooling fish such as ember tetras, or a single betta fish is another good option.

Invertebrates and small fish can thrive in a 3.5-gallon tank if given appropriate care, feeding, and maintenance. Keeping Betta Fish:

Betta fish are one of the most popular pets for small aquariums, and a 3.5-gallon tank can be an excellent environment for them.

Betta fish are usually low-maintenance and have low metabolic needs. However, it is important to note that bettas are solitary creatures and should only be kept with other fish of the same species unless you opt to keep shrimp or snails instead.

Bettas are known for their vibrant coloration and flowing fins, which can lend a beautiful aesthetic to your tank. It is important to give them plenty of hiding spots and vegetation in their tank.

Providing smooth substrate or a hiding house can help if the betta fish ever needs to retreat to a safe space. Maintaining a 3.5-Gallon Fish Tank:

Regular Water Changes:

One of the most important aspects of maintaining a 3.5-gallon fish tank is to perform regular water changes.

Water changes should be done every week or every other week depending on the type of fish. Small aquariums have lower water volume and thus, they are at a higher risk of water quality issues, which can harm the fish and other aquatic life.

Filter Maintenance:

In addition to regular water changes, 3.5-gallon fish tanks also need regular filter maintenance. The filter needs to be cleaned every 2-4 weeks or as necessary.

Ensure that the filter is working properly to help keep the water clean and free of harmful toxins. A lack of proper filtration will lead to a buildup of toxins, resulting in a dangerous environment for your fish.

Substrate Care:

Another essential aspect of maintaining a 3.5-gallon fish tank is the care of the substrate. Uneaten food and other debris can accumulate quickly in such a small aquarium, so regular care is needed to ensure the substrate remains clean.

It is recommended to vacuum the gravel or substrate on a regular basis to remove debris and uneaten food. Additionally, providing a thin layer of clean sand or loose substrate at the bottom of the tank can help nourish healthy bacteria, which improve the tank’s water quality.


In conclusion, a 3.5-gallon fish tank requires careful planning and maintenance to ensure the health and well-being of your aquatic life. When it comes to choosing suitable livestock, consider small freshwater invertebrates, such as shrimp, snails, or small schooling fish like ember tetras or betta fish.

Remember that frequent water changes, regular filter maintenance, and proper substrate care are all essential components of keeping a healthy 3.5-gallon fish tank. With the right combination of care and attention, a 3.5-gallon fish tank can provide you with a rewarding and enjoyable pet ownership experience.

Looking for the best 3.5-gallon fish tank? There are plenty of options on the market today, but it’s important to choose one that suits your needs and budget.

In this article, we’ll review the best 3.5-gallon fish tanks that are currently available on the market and discuss some of the challenges of keeping a pico tank. Koller Products AquaView 3.5-Gallon Aquarium:

The Koller AquaView 3.5-gallon aquarium is a great option for those who want a simple and sleek design.

The kit includes an LED light, a motorized filter, and a plastic lid with feeding hole. This tank is perfect for those who want to keep a single betta fish or a small school of fish.

Its compact size makes it perfect for a desk or countertop. Top Fin Enchant Aquarium 3.5-Gallon:

The Top Fin Enchant 3.5-gallon aquarium is another great option.

It has a unique and modern design that is sure to stand out in any room. The kit includes an LED light, a filter, and a glass canopy with a feeding hole.

This tank is perfect for those who want a small tank with plenty of visual interest. It is also suitable for a single betta or a small school of fish.

Imagitarium 3.7-Gallon PRO Deluxe Freshwater Aquarium:

The Imagitarium 3.7-gallon aquarium is an excellent option for those who want a more professional-looking tank. The kit includes an LED light, a filter pump, a thermometer, and a hinged lid with a feeding hole.

It is a little larger than the other two options, which means you can keep a slightly larger school of fish. It is also suitable for a betta fish.

Challenges of Pico Tanks:

Although pico tanks like the ones listed above can be a beautiful addition to any home, they do come with some unique challenges that must be addressed. One of the biggest challenges is maintaining water quality.

Such a small amount of water can be easily disrupted by fluctuations in pH or temperature. Also, small aquariums are more susceptible to rapid changes in water temperature and quality, which can harm the fish and other aquatic life, if not properly addressed.

Successful Pico Tank Keeping:

The key to successful pico tank keeping is careful selection of fish and a lot of maintenance. Be mindful of the number and type of fish that you choose to keep in your tank.

Overcrowding will quickly lead to poor water quality. You’ll also need to be diligent about water changes, filter maintenance, and substrate maintenance.

It is essential to monitor the water temperature and quality carefully and consistently to maintain a healthy environment. Seeking Advice:

If you’re considering setting up a pico tank, it is always advisable to seek advice from professionals.

Consult with staff at your local pet store or a professional aquarist, especially if you’re new to aquarium keeping. They can offer invaluable advice on how to maintain a healthy and thriving aquarium.

Joining social media groups and forums is also a great way to learn from fellow hobbyists. You can find great resources online, and there’s a wealth of knowledge to be gleaned from those who have gone before you.


In conclusion, the best 3.5-gallon fish tank will depend on your budget, space limitations, and aesthetic preferences. All of the options listed above are excellent choices that can provide you with a beautiful and rewarding experience, but maintenance and upkeep are essential.

It’s important to remember that pico tanks come with unique challenges, but with proper care and attention, they can offer a beautiful and relaxing escape into the aquatic world. Seeking advice and proper research can help you set up the perfect 3.5-gallon aquarium for your home or office.

In conclusion, choosing the right fish tank size and maintaining it properly can be key to ensuring that your aquatic pets thrive and live a healthy life. A 3.5-gallon fish tank is a great option to add some life and visual interest to your home or office, but it comes with some challenges, such as water quality maintenance, filter maintenance, and substrate care.

Choosing the right fish and seeking advice from professionals can certainly help in overcoming these challenges. Finally, careful research and consideration will help determine which best 3.5-gallon fish tank is fit for your needs, space, and budget.

With proper care and dedicated attention, pico aquariums can provide a beautiful and relaxing experience that will help you escape into the aquatic world.

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