20 gallon fish tanks are the perfect starter tank for a beginner or someone looking to upgrade from their 10-gallon tank. 20 gallons is the perfect size for most types of community fish and inverts, such as shrimp, snails, and crabs. 20-gallon aquariums also make great quarantine tanks because they’re small enough that you can keep them clean without too much hassle, but they still have plenty of room for a few fish and some decorations.
If you’re looking for the best 20-gallon fish tank on the market, then you’ve come to the right place. In this article, we’ll be discussing the top 5 20-gallon tanks available. We’ll be discussing the pros and cons of each tank so that you can make an informed decision before purchasing one.
Without further ado, let’s get started!
5. Aqueon 20 Gallon Aquarium Kit
The Aqueon 20-gallon aquarium kit is a great starter kit for anyone looking to get into the aquarium hobby. It comes with a 20-gallon glass tank, a fluorescent hood and light, an adjustable filtration system, and a thermometer. The filter is adjustable to accommodate different fish and tank sizes, making it a great choice for beginners.
The only downside to this kit is that it doesn’t come with a heater, so you’ll need to purchase one separately if you live in a colder climate. Other than that, the Aqueon 20-gallon aquarium kit is a great choice for anyone looking for an affordable 20-gallon tank.
Pros:
- Comes with a great filter
- Adjustable to accommodate different fish species with different sizes
- Very easy to install
Cons:
- Doesn’t come with a heater
- Some people might find the fluorescent light too bright
4. Marineland 20 Gallon LED Aquarium kit
The Marineland 20 gallon LED aquarium kit is another great starter kit for anyone looking to get into the hobby of fish keeping. It comes with a 20-gallon glass tank, a LED hood and light, an adjustable filter, and a thermometer. The LED hood and light are a great addition, and they really make your tank stand out.
Like the Aqueon 20-gallon aquarium kit, the Marineland 20 gallon LED aquarium kit doesn’t come with a heater, so you’ll need to purchase one separately if you live in a colder climate. Other than that, the Marineland 20 gallon LED aquarium kit is a great choice for anyone looking for an affordable 20-gallon tank.
Pros:
- Comes with a LED light and hood
- Adjustable to accommodate different fish species with different sizes
- Filter and thermometer included
Cons:
- Also doesn’t come with a heater
- Some reports of leaking tanks, although we didn’t have this problem
3. Fluval Spec V 20 Gallon Aquarium Kit
The Fluval Spec V 20 gallon aquarium kit is a great choice for anyone looking for an affordable, stylish, and well-rounded 20-gallon tank. It comes with a 20-gallon glass tank, an LED hood and light, a filter, and a thermometer. The LED hood and light are a great addition, and they really make your tank stand out.
The filter is adjustable to accommodate different fish and tank sizes, making it a great choice for beginners. The only downside to this kit is that it doesn’t come with a heater, so you’ll need to purchase one separately if you live in a colder climate. Other than that, the Fluval Spec V 20 gallon aquarium kit is a great choice for anyone looking for an affordable 20-gallon tank.
Pros:
- Comes with a LED hood and light
- Also adjustable to accommodate different fish species with different sizes
- Great for beginners
Cons:
- The only con is that it doesn’t come with a heater, but that can be easily remedied by purchasing one separately
2. Penn Plax 20 Gallon Critter Cage
The Penn Plax 20 gallon critter cage is a great choice for anyone looking for an affordable, stylish, and well-rounded 20-gallon tank. It comes with a 20-gallon glass tank, an LED hood and light, a filter, and a thermometer. The LED hood and light are a great addition, and they really make your tank stand out.
The filter is adjustable to accommodate different fish and tank sizes, making it a great choice for beginners. The only downside to this kit is that it doesn’t come with a heater, so you’ll need to purchase one separately if you live in a colder climate. Other than that, the Penn Plax 20 gallon critter cage is a great choice for anyone looking for an affordable 20-gallon tank.
Pros:
- Comes with a LED hood and light
- Adjustable to accommodate different fish and tank sizes
Cons:
- Doesn’t come with a heater
1. Tetra 20 Gallon Aquarium kit
The Tetra 20 gallon aquarium kit is the best 20-gallon fish tank on the market. It comes with a 20-gallon glass tank, a fluorescent hood and light, an adjustable filter, and a thermometer. The filter is adjustable to accommodate different fish and tank sizes, making it a great choice for beginners. The only downside to this kit is that it doesn’t come with a heater, so you’ll need to purchase one separately if you live in a colder climate. Other than that, the Tetra 20 gallon aquarium kit is a great choice for anyone looking for an affordable 20-gallon tank.
Pros:
- Come with a high quality 20-gallon glass tank
- Fluorescent hood and light included
- Adjustable filter
- Thermometer included
- A great option for beginners
Cons:
- Doesn’t include a heater
20 Gallon Fish Tank Guidelines
20-gallon tanks are a great size for those just starting out in the fish-keeping hobby. They’re also a great choice for anyone looking for an affordable, stylish, and well-rounded tank. When choosing a 20-gallon tank, there are a few things you’ll want to keep in mind. Explained below are the key factors to consider when choosing a 20-gallon tank.
1. Tank Size
When it comes to choosing a fish tank kit, size is an important consideration. A small tank might be easier to set up and maintain, but it will offer limited space for your fish to swim and grow. A large tank, on the other hand, can be more challenging to care for, but it will provide your fish with a more natural environment. In general, it is recommended that you choose a tank that is at least 20 gallons in size. This will give your fish plenty of room to move around and stay healthy. Of course, the final decision about tank size is up to you. Just be sure to consider all the factors before making your purchase.
2. Tank Shape
There are many different shapes and sizes to select from when it comes to tanks. The most common tank shapes are rectangular, cylindrical, and spherical. Each shape has its own benefits and drawbacks. For example, rectangular tanks are typically less expensive to construct than other shapes. However, they can be more difficult to clean, due to the corners and tight spaces. cylindrical tanks tend to be easier to clean, but they can be more expensive due to the need for added support. Spherical tanks are the most expensive option, but they offer the greatest strength and stability. Ultimately, the best tank shape for your needs will depend on a variety of factors.
3. Tank Material
There are a variety of materials that can be used on 20 gallon fish tanks. The most common options are glass, acrylic, and plastic.
Glass is the most popular choice for fish tanks, as it is strong, durable, and easy to clean.
Acrylic is another popular option, as it is lighter than glass and offers a clearer view of your fish. However, it is important to note that acrylic scratched more easily than glass.
Plastic is the least popular choice for fish tanks, as it is less durable and more difficult to clean. However, it is the most affordable option.
4. Tank Style
The tank style of 20-gallon tanks is one of the most popular factors for those looking to purchase a small aquarium. This style features a rectangular glass tank with an overflow box that allows water to drain into a sump below. The sump then houses all of the filtration equipment, keeping it out of sight and freeing up space in the main tank. In addition, the tank style of 20-gallon tanks often comes with a built-in stand that makes it easy to set up and maintain.
As a result, this option is ideal for those who want a low-maintenance aquarium that still offers plenty of visual appeal.
5. Tank Color
When it comes to fish tanks, there are a variety of colors to choose from. The most popular options are clear, blue, and black.
Clear tanks offer the best view of your fish, as they allow light to pass through the glass.
Blue tanks create a calming environment for your fish and can help to enhance their coloration.
Dark color tanks tend to be less popular, as they can make it difficult to see your fish. However, they can help to create a more natural-looking environment depending on the species you decide to put in it.
Ultimately, the best color for your tank will depend on your personal preferences.
6. Tank Stand
A tank stand is a must-have item for anyone who has an aquarium. Not only does it provide a place to put your 20 gallon fish tank, but it also helps to keep it from tipping over. The stand also raises the tank up so that you can see into it more easily. There are many different types of tank stands available on the market, so you should be able to find one that meets your needs.
When choosing a tank stand, be sure to consider the size of your fish tank and the weight it has with the water inside. You will also want to make sure that the stand is sturdy and will not tip over easily. With a little bit of research, you should be able to find the perfect tank stand for your home.
7. Heater
A heater is beneficial for every 20-gallon tank. This is especially important if you plan on keeping tropical fish, as they are sensitive to changes in temperature. Heaters are available in a variety of sizes and styles, so you can choose one that best fits your needs. For example, some heaters have an adjustable thermostat, while others come with a pre-set temperature.
Additionally, some heaters are designed to be fully submersible, while others must be placed outside of the tank. When choosing a heater for your 20-gallon tank, be sure to consider the specific needs of your fish. By providing them with a stable water temperature, you can help them stay healthy and thrive.
8. Filter
Aquarium filters are a vital part of any aquarium setup, providing essential filtration and water circulation. There are a number of different types and brands of aquarium filters available on the market, making it important to choose the right filter for your specific set-up.
Additionally, you will need to choose a filter type based on your glass aquarium setup and fish species. Canister filters are typically best for larger aquariums or those with sensitive fish species, while hang-on-back filters are more suited for smaller tanks. Whichever type of filter you choose, be sure to follow the manufacturer’s instructions carefully to ensure proper installation and operation.
9. Lighting
The ninth thing you’ll want to consider is the lighting. Aquarium lighting is important for the health of your fish and plants, as well as the overall look of your aquarium. There are a number of different options to choose from when it comes to aquarium lighting, so be sure to select the best light for your specific set-up.
20 gallons aquariums can come with different types of lighting such as fluorescent, metal halide, and LED.
Fluorescent lighting is the most common type of aquarium lighting and is typically used in smaller tanks. Metal halide and LED lights are more powerful and are often used in larger tanks.
10. Decorations
The tenth thing you’ll want to consider is the decorations. 20-gallon tanks come in both plastic and live versions, so you’ll need to decide which type best suits your needs. Plastic decorations are easier to clean and less expensive than live decorations, but live decorations add more color and variety to your tank.
11. Fish
The eleventh thing you’ll want to consider is the fish. 20-gallon tanks can hold a maximum of 20 fish (depending on the species you decide to keep), so you’ll need to decide which species and how many fish you want to keep. Be sure to choose a variety of fish that will get along well together.
12. Gravel
The twelfth thing you’ll want to consider is the gravel. 20-gallon tanks come with a variety of gravel sizes, so you’ll need to decide which size best suits your needs. Larger gravel sizes are better for hiding fish, while smaller gravel sizes are better for preventing algae growth.
13. Thermometer
Another important thing you need to consider for your 20 gallon fish tank is the thermometer. You need to decide which thermometer best suits your fish needs. A thermometer is necessary to ensure that your tank’s water temperature is within the optimal range.
14. Pump
The fourteenth thing you’ll want to consider for your 20-gallon tank is the pump. A pump is necessary to circulate the water in your tank. Be sure to choose a pump that is the right size for your tank and that has the features you need.
Conclusion
There are a lot of things to consider when setting up a 20 gallon fish tank. With so many options available, it’s important to take your time and choose the best products for your specific set-up. By following these tips, you can be sure to choose the best 20-gallon fish tank between the options we’ve provided!
Thankfish for reading!