A 20-gallon fish tank is a popular choice for beginners and experienced aquarium enthusiasts alike. To keep the water in a 20-gallon tank clean and healthy for the fish, it’s important to choose a suitable filter. A filter is an essential piece of equipment that removes debris, excess food, and waste from the water, preventing harmful substances from building up and harming your fish.
When looking for the best filters for 20 gallon tank, there are several factors to consider, including the type of filter, the flow rate, the ease of maintenance, and the overall quality and reliability of the product. Some of the most popular types of filters for a 20-gallon tank include hang-on-back (HOB) filters, canister filters, and sponge filters.
Hang-on-back filters are the most commonly used type of filter for a 20-gallon tank. They are easy to install and maintain and provide excellent mechanical and biological filtration. Canister filters are another popular option for larger tanks, and they provide superior mechanical and biological filtration. However, they can be more expensive and difficult to maintain.
Sponge filters are the most affordable option and are easy to set up and maintain. They provide good biological filtration and are suitable for smaller tanks or as a secondary filter for larger tanks.
Some of the best 20-gallon fish tank filters on the market include the Fluval C2 Power Filter, the AquaClear Power Filter, the Penn Plax Cascade Hang-on Aquarium Filter, the Marineland Penguin Power Filter, and the Aquatic Life RO Buddie Reverse Osmosis System. It’s essential to choose a filter that suits your needs and the type of fish you have in your tank, so be sure to research your options carefully before making a purchase.
We know how much of a pain it can be to shop around online for aquarium products. There are tons of products all claiming to be the filter out there and reading through them all is mind-numbing. To help you out we have found some of the best filters for 20 gallon tank.
We have picked out 10 great filters that will work perfectly in smaller tanks. Below, we go over each model so you can choose which filter will work best for your home. We even listed out the cons of each item so that you know the potential downsides before purchase.
10 Best Filters for 20 Gallon tank
1. Aqua Clear– Fish Tank Filter– 5 to 20 Gallons– 110v
Aqua Clear Aquarium Filter is excellent for individuals that possess smaller sized fish tanks. This is the best starter set for any person that needs to add in a filter to their storage tank. This item even has its very own special line of accessories to help the filter run smoothly for several years ahead.
This has a water output price of 100 gallons of water per minute. This is a three-stage filter making use of biological, mechanical, and chemical purification. Furthermore, you can manage the flow of water for this system. This makes it excellent for containers with fish that prefer a calmer setting.
This filter measures 4.5 x 7 x 6.5 inches as well as considers 1.4 pounds. This filter is made to be a power reliable design to maintain it’s operation low cost. It likewise includes a 2-year service warranty in case anything takes place to your acquisition. Just alert the company for a substitute.
With this product, you will certainly get AquaClear Foam, Triggered Carbon as well as BioMax with cycle guard. Make certain to frequently clean this version of filter to keep it working effectively. You can additionally purchase AquaClear media that will fit perfectly into your new filter
There are a few drawbacks to this item, nevertheless. This filter doesn’t have an extremely strong flow rate which may dissatisfy some. It can additionally be a really loud model, making it tough to keep in your room.
Pros:
- Provides excellent mechanical, chemical, and biological filtration for tanks up to 20 gallons.
- Features adjustable flow rates and customizable media baskets for versatile filtration options.
- Easy to maintain and clean.
- Quiet operation.
Cons:
- Can be too powerful for small tanks, which may cause fish to struggle against the current.
- The adjustable flow rate can be tricky to set up correctly.
- The filter cartridges need to be replaced frequently, which can add up in cost over time.
2. Fluval C Power Filter
The Fluval C Power Filter is perfect for tiny tanks or careless fish. This is the C2 version of Fluval filters that are excellent for 20-gallon storage tanks. It even comes with everything you require to get started making it a perfect option for those who have actually never ever made use of a filter before.
This filter has a flow price of 119 gallons of water per hour as well as functions well up to 30 gallons of water. If you want something a little stronger then you can go with the C3 which is ideal for a 20-gallon container also. The C3 has a slightly more powerful flow price at 153 gallons of water per hour.
This filter measures 4.5 x 6 x 8 inches and weighs 1.9 pounds. It even features a ceramic heating system core to ensure that the warmth is uniformly distributed in the filter. It likewise includes a cleaning indication so you will know when you need to wash it your poly foam.
With this filter, you will obtain chemical, mechanical, and organic media to get you began. This filter utilizes 5-stages of filtration to ensure that your water is transparent. All you require to do is make certain that the filter is properly cleaned up and also alter out the media when needed.
So, what are this filters drawbacks? This filter is rather loud and just doesn’t appear that wonderful when it’s running. The interior parts of the filter also have a tendency to break or need substitute quite often. This can cause the filter switching off out of nowhere.
Pros:
- Ideal for larger tanks up to 70 gallons.
- Provides superior mechanical, chemical, and biological filtration.
- Features a five-stage filtration system, including a foam pre-filter, a biological filter, and a chemical filter.
- The adjustable flow rate and direction make it easy to customize the filtration to suit your tank’s needs.
Cons:
- Expensive compared to other filters for smaller tanks.
- The filter can be noisy, especially at higher flow rates.
- The cartridges need to be replaced regularly, which can add up in cost over time.
3. Marina Power Filter
The Marina Power Filter is easy and also easy to use accessory excellent for newbies. The Marina is just one of the best filters for 20-gallon fish tanks out there. It’s made to be simple to collaborate with so you won’t have to lose your time trying to get it set up.
This filter has a water flow rate of 92 gallons of water per hour. While this might be among the lower ratings on this listing it still does a terrific job of keeping your tank clean. This is, certainly, all at an inexpensive rate so that practically any person can buy this version.
This filter measures an ultra-thin 3.8 x 11.5 x 6.4 inches as well as evaluates simply one pound. It’s also self-priming to maintain you from needing to do any type of added work. The most effective component is you can regulate the water circulation. This makes this filter perfect for fish that require a calm atmosphere.
With this filter, you will get every little thing you require to get started. Included with your purchase is a 2 Bio-Carb as well as 2 Bio-Clear with both cartridges having Ceramitek. All you require to do is make certain that normal cleaning happens to maintain it running smoothly.
Like with the majority of items the Marina does have some disadvantages. The filter might be small, yet it makes a great deal of sound that is instead unpleasant. You will certainly likewise find yourself changing out the media a whole lot. This is because the strips of media you utilize incredibly thin.
Pros:
- Affordable option for small tanks up to 20 gallons.
- Provides good mechanical and biological filtration.
- The adjustable flow rate makes it easy to customize the filtration to suit your tank’s needs.
- Easy to install and maintain.
Cons:
- The filter cartridge needs to be replaced regularly, which can add up in cost over time.
- Not suitable for tanks with heavy fish populations or large amounts of waste.
- The filter can be noisy at higher flow rates.
4. Penn Plax Cascade Container Filter
The Penn Plax Cascade Container Filter is a tiny, yet powerful item that you will simply like. The business behind this filter aims to make certain you are totally satisfied with your acquisition. You are also covered by a gracious warranty from the minute it arrives.
The filter has a result price of 115 gallons of water per min and is best for as much as 30-gallons of water. This filter makes use of rotation if valves comparable to what you would certainly find in most swimming pool pumps. This assists develop a powerful cleaning cycle that will leave your water crystal clear.
This filter determines 13.5 x 11.5 x 9 inches and also is a much heavier design weighing in at 9 extra pounds. This filter also has a valve to assist you change the circulation of water. These valves are easy to use making the process of regulating your storage tank simpler than ever before.
With this filter you will certainly receive, big filter trays, start-up filter media & input/output tubing. This offers every little thing that you require to set yore brand-new tank device up and running. This filter features a button primer that you will certainly require to utilize when launching.
There are a few cons to this version. This filter might have a trouble with making a loud rattling noise. This can be unpleasant and also may disturb the tranquility of your set-up. Apart from that this filter functions flawlessly as long as you clean it on a regular basis.
Pros:
- Ideal for larger tanks up to 115 gallons.
- Provides excellent mechanical, biological, and chemical filtration.
- The canister design allows for a larger media capacity, reducing the need for frequent replacements.
- The flow rate is adjustable, allowing for customization to suit your tank’s needs.
Cons:
- Expensive compared to other filters for smaller tanks.
- The canister design can be more difficult to install and maintain than other filter types.
- The filter can be noisy at higher flow rates.
5. The Very Best Marineland Penguin Power Aquarium Filter, 10 to 20-Gallon, 100 GPH, Fish Tank
The Most Effective Marineland Penguin Power Fish Tank Filter is another excellent choice for small tanks. This filter has all the power you need to aid keep your water clear and your fish satisfied. It uses three stages of filtration to give you clean water regularly.
Unlike most filters, the circulation rate of the Marineland is certified 100 gallons of water per hour. This filter is ensured to offer you the water flow you are seeking. It also utilizes the Rite-Size filter to make certain that every person you use of an ideal suitable for this filter.
This filter determines 8.2 x 5.5 x 5.4 inches and is a light 1.52 extra pounds. This filter utilizes a three-stage filtering process to make certain your storage tank obtains tidy. The filter is additionally very easy to have up and also running in your tank in a really short amount of time.
With your acquisition, you will get a Rite-Size cartridge to make sure that you can begin quickly. There is even a larger sized ranked from 20 to 30 gallons with a stronger flow price. Similar to this model the bigger model also has its gallons per hr accredited.
This version does include a few disadvantages. This filter can unexpectedly stop working due to falling short inner parts. This can additionally make the filter instead noisy. The filters components are replaceable, yet it can be a hassle to uncouple and also repair.
Pros:
- Ideal for tanks up to 20 gallons.
- Provides excellent mechanical and biological filtration.
- The Bio-Wheel technology provides superior biological filtration by promoting the growth of beneficial bacteria.
- The adjustable flow rate and direction make it easy to customize the filtration to suit your tank’s needs.
Cons:
- The filter cartridge needs to be replaced frequently, which can add up in cost over time.
- The filter can be noisy at higher flow rates.
- The Bio-Wheel can become clogged with debris, requiring frequent cleaning to maintain optimal performance.
6. Tetra Murmur In-Tank Filter with BioScrubber for Aquariums
The Tetra Whisper In-Tank Filter with BioScrubber for Aquariums is an effective filter. It is great for beginners as well as one of the very best filters for a 20-gallon aquarium. It also runs silently to make sure that you can maintain it in any type of space of your home without noticing it exists.
This product has a result price of 80 gallons of water per hour. This is a model of filter that really goes inside of your tank. This helps to keep the noise down by stifling the noise. This filter can even work in as little as 2 inches of water.
This filter measures 4.9 x 5.4 x 10.2 inches and also considers just 1.45 pounds. This filter was made to work in fish tanks 20-gallons of size as well as smaller. This filter makes use of two suction mugs that come included to allow you put it on your container anywhere you want.
With this filter, you will certainly likewise obtain a pre-assembled Murmur Bio-Bag to get you began. This filter additionally has a detachable bottom for simple cleansing. This makes the filter much less of a hassle to care for when doing upkeep.
There are some cons to having this filter. This filter has some trouble starting up occasionally. It likewise has limited space for including tool to your tank. This can make finding filter cartridges that fit a bit of an inconvenience.
Pros:
- Suitable for tanks up to 30 gallons.
- Provides mechanical, chemical, and biological filtration.
- Comes with an air pump to increase oxygen levels in the water.
- Compact and easy to install.
- Quiet operation.
Cons:
- The filter cartridges need to be replaced frequently, which can add up in cost over time.
- Not as powerful as external filters, which may not be suitable for tanks with heavy fish populations or large amounts of waste.
- The air pump can be noisy.
7. GRECH CBG-800 Hang-On Back Filter with UV Sterilizer
This is another hang-on back water filter that would be ideal for a 20-gallon fish tank. Actually, a 20-gallon capacity is all that is required for optimal performance. As a result, it is properly proportioned for your requirements. It boasts a sleek design that makes installation a breeze.
This filter, like the previous one, comes with several filter medias as well as a UV Sterilizer. You may toggle this on and off as desired. It is used to get rid of algae and other parasites that might damage your fish.
One of the most significant advantages of this filter is its versatility. This is due to the fact that it can filter both fresh and salt water. On top of that, you may adjust the flow of water that enters the filter.
It’s worth noting as a disadvantage that the filter generates a lot of noise. The pump is not very quiet. So, if you don’t want this, keep reading and search for another product.
However, there are no additional disadvantages. So, if you don’t mind a louder filter, go ahead and get it.
Pros:
- Provides excellent mechanical and biological filtration.
- Comes with a built-in UV sterilizer to eliminate harmful bacteria and parasites.
- Suitable for tanks up to 50 gallons.
- The hang-on back design is easy to install and maintain.
Cons:
- The filter cartridges need to be replaced frequently, which can add up in cost over time.
- The UV sterilizer bulb needs to be replaced annually, which can be costly.
- The flow rate may be too high for some fish species, causing stress or injury.
8. Fluval Underwater Filter
This filter is manufactured by the same manufacturer as the previous one. The present filter, on the other hand, is an underwater filter rather than a hang on back filter. Despite this, this filter is simple to use and has all of the necessary qualities you’d expect from a high-quality filter.
Because it works with 40-gallon fish tanks, it can easily clean 20 gallons of water. Aside from that, if you desire an underwater filter, you may safely pick it as your next filtering system.
The biggest benefit is the ability to depict the output flow in three distinct places. This is a must-have feature when shopping for an underwater equipment. Each of the three positions has distinct benefits. For example, the first setting (Top Output) will result in maximal water oxygenation.
This filter is ideal if you want a completely customized aquarium. This is due to the fact that by positioning it in certain locations, you may create a variety of personalized designs. You can also make miniature waterfalls by putting it against the wall of the fish tank.
A significant advantage is that the filter is very silent while operating at full capacity. This makes it ideal for folks who prefer to keep their aquarium in a quiet environment, such as their workplace.
Pros:
- Suitable for tanks up to 40 gallons.
- Provides excellent mechanical, biological, and chemical filtration.
- Features a three-stage filtration system and adjustable flow rates.
- Can be used in freshwater, saltwater, and terrarium setups.
Cons:
- The filter cartridges need to be replaced frequently, which can add up in cost over time.
- The filter can be noisy, especially at higher flow rates.
- The adjustable flow rate can be tricky to set up correctly.
9. MarineLand Magnum Polishing Internal Filter
When I mentioned you should enlarge your filter, I’m sure you didn’t expect this gadget to be one of the top ten options. This is due to the fact that it is compatible with aquariums up to 97 gallons in size. You would think this is excessive when compared to our little 20-gallon fish tank. But, no, not at all.
This is true since you need a high-quality filter that will last for many years. You probably don’t want to replace it every six months. Because the MarineLand filter can handle 97 gallons of water, you can be certain that it will perform flawlessly with 20 gallons. This is essentially a canister filter.
It has a capacity of 290 gallons of water per hour. During 60 minutes, your whole body of water will be cleansed more than 14 times. This is the device’s most significant advantage. When it comes to cleansing water, it works quickly.
The filter material is completely changeable, allowing you to create a unique aquatic habitat for your marine life. It is a dual-chamber container, as opposed to the hang on back filters.
The one disadvantage is that it takes up a lot of room in your tank.
Pros:
- Suitable for tanks up to 97 gallons.
- Provides excellent mechanical and biological filtration, as well as polishing filtration.
- The canister design allows for a larger media capacity, reducing the need for frequent replacements.
- Features a self-priming pump and adjustable flow rate.
Cons:
- The canister design can be more difficult to install and maintain than other filter types.
- The filter can be noisy at higher flow rates.
- The filter cartridges need to be replaced regularly, which can add up in cost over time.
10. Aqueon QuietFlow Canister Filter
This Aqueon product, like the one before it, is a canister filter. It was created to function with both fresh and salt water, and it may be used in aquariums up to 55 gallons in size.
It is somewhat faster than the prior Penn Plax filter. This one has a filtering rate of 200 gallons per hour. As a consequence, the water is filtered ten times in one hour.
It has a distinct benefit in that it has a specific water cleaning equipment that can be attached to the rear of your fish tank. This is used to quickly and easily maintain the aquarium filter. It’s also good that they provided this for free.
In addition, the three primary filtering medias are conveniently put in the filter: mechanical, chemical, and biological filters.
Aside from these characteristics, the canister is fairly identical to the one I previously discussed. However, if you require a gadget that performs well, this should be a solid pick.
This filter works with other Aqueon filters. If you intend on getting an Aqueon hang-on-back filter, you can make the two filters operate together.
Pros:
- Suitable for tanks up to 55 gallons.
- Provides excellent mechanical, biological, and chemical filtration.
- The canister design allows for a larger media capacity, reducing the need for frequent replacements.
- Features a self-priming pump and adjustable flow rate.
- Comes with a valve block for easy maintenance and cleaning.
Cons:
- The canister design can be more difficult to install and maintain than other filter types.
- The filter can be noisy at higher flow rates.
- The filter cartridges need to be replaced regularly, which can add up in cost over time.
What Filter Should I Get for a 20 Gallon Aquarium?
I propose three kinds of filters for 20 gallon fish tanks: hang on back filters, internal filters, and canister filters. I’ll go through each of them separately. This way, you’ll know how to choose the ideal version for your specific requirements. Of course, after I’ve told you about each, you’ll have the opportunity to look at ten of the finest filters on the market.
I’m not going to mention sponge filters on purpose. While sponge filters work well in tiny fish tanks, they are not appropriate for bigger aquariums. In fish tanks larger than 10 gallons, I would not use sponge filters.
Back Filter Hang (HOB)
This is most likely the easiest of the three filters. For example, you can only install it by attaching it to the rear of your tank. This is where the name originates.
This model’s filtration is straightforward: water is pulled into a lift tube and then into a specific chamber where it is cleansed. This chamber has a variety of filter media components.
Let’s begin with the first medium, which also serves as the initial filtering step in practically all filters:
Water is forced through them, and when it’s clean, a pump returns it to the tank. The filter may perform biological, mechanical, or chemical filtering depending on the material utilized.
Filter Internal
This filter, as the name implies, is totally contained inside the fish tank. In other words, it’s completely submersible. As a result, you may position your aquarium anywhere you wish since no portion of it protrudes.
A hang on back filter operates differently than an internal filter. But the basic concept remains the same: if used as directed, it will clean the water within the tank. It’s worth noting, though, that most internal filters are designed for smaller aquariums.
Filter Canister
A canister filter is comparable to a hang-on-back filter, but it performs a better job of cleaning. A set of hoses take water from the tank, which is then pumped through the filters.
When the water is clean, it is returned to the fish tank. This filter must also be installed outside the tank, necessitating more room than the prior internal filter.
A canister filter, on the other hand, may perform a far better job. This is because of the cleaning procedure. As you can see, it’s identical to the first kind, but a canister filter additionally pressurizes the water via its filter medium. As a consequence, the water will be much cleaner.
While fish may generate a lot of waste, smaller filters clog fast and are useless at purifying the water. This is why it is preferable to use an overzied filter.
If you do not choose a strong enough filter to clear the water, the aquarium will be unable to maintain itself, resulting in algae issues or even fish fatalities. Keep it in mind!
Conclusion
As the best 20 gallon filter, we propose the Aquaclear Fish Tank Filter. This filter has many stages of filtering and a flow rate adjustment range of up to 200 GPH.
With its porous ceramic rings, it’s one of the best filters for supporting the development of good bacteria, and it has extra characteristics for improving water quality. Furthermore, the waterfall design will aid in the addition of oxygen to your tank.
If you’re ready to spend a little more money, the Aquaeon QuietFlow Canister Filter is another excellent option. This filter has a flow rate of 200 GPH as well, and we enjoy how simple it is to tailor the filtering material you use using the nested basket design.
Visit our homepage to see more products: PORT ROYAL LANDING MARINA
Related Articles:
