Picking out a filter for an aquarium can be a drawn-out process, especially if you have a smaller tank. Many of the filters available on the market are too big or too powerful to work with your aquarium. To help you find the Best filters for 100-125-gallon aquariums we did a little searching.
Below we have given you a guide to 6 of the best filter we could find. Each filter has its good and bad features listed. This list is filled with all the information you will need to pick out the best filter for your tank. We even list our to-the-point pros and cons to help with your decision.
- 6 Best Filters For 100-125-Gallon Aquariums To Buy In 2021 Review
- 1 Hydor Professional External Canister Filter
- 2 Penn Plax Cascade Canister Aquarium Filter
- 3 Aqua Clear – Fish Tank Filter – 60 to 110 Gallons – 110v
- 4 SunSun Hw303B 370GPH Pro Canister Filter Kit with 9-watt UV Sterilizer
- 5 AE-SHOP Aquarium Filter Fish Tank Upper Trickle Box Filters System
- 6 Polar Aurora 4-Stage External Canister Filter with 9-watt Uv Sterilizer, 525 GPH
- Picking Your Filter For Your 100-125-Gallon Tank
6 Best Filters For 100-125-Gallon Aquariums To Buy In 2021 Review
1 Hydor Professional External Canister Filter
The Hydor Professional External Canister Filter is a powerful little filter that you will love. This is the perfect choice for someone new to using filters in their tank. This filter is guaranteed to help you clean your tank less often, it will also create a better environment for your fish.
This filter will also work for up to a 150-gallon tank if you decide to upgrade in the future. This filter cycles through 345 gallons of water per hour and is an external model. All you need to do is securely hook the filter onto the side of your tank to get started.
The filter is 11 x 9 x 24 inches and 18 pounds in weight. It offers an easy priming feature to make your life easy along with telescopic intake tubes. This filter is built to last for years to come. This way you won’t have to continually buy a new filter every couple of years.
This filter uses three stages of filtration to keep your water clear. It uses a combination of Biological, Mechanical and Chemical filtration. These three types of filtration combined get out even some of the smallest debris. The biofilter even helps by growing good bacteria in the tank.
This filter does have a few bad sides though. This model is prone to leaking especially if you don’t make sure everything is securely connected. This can be irritating as the leaks aren’t big, and are hard to notice at first. This model can also fall victim to a faulty motor.
2 Penn Plax Cascade Canister Aquarium Filter
The Penn Plax Cascade Canister Aquarium Filter is an elite filter with several great features. Like with most Cascade filters, this smaller filter is still powerful enough to get the job done. You won’t have to worry about spending extra time cleaning your tank after installing this product.
The filter can handle up to a 100-gallon tank giving you the option to expand in the future. This filter has a filtering speed of 265 gallons of water per hour. It also offers 2 large media baskets for you to use. This lets you have more freedom over choosing the right media for your tank.
This filter measures 9.8 x 9.8 x 16.9 inches with a weight of 13 pounds. This filter is intended for use outside the tank and should never be submerged in water. This filter gives you the power to adjust the water flow and also has shut-off valves that can come in pretty handy.
With this product, you will also receive, the two large filter trays, start-up filter media & input/output tubing. This will give you everything you need to get started up with your new filter. You are also covered by the Cascade 3-year warranty and Your satisfaction is 100% guaranteed.
There are a few issues that could pop up with this product, however. This is another filter that can spring a leak unexpectedly. This model is also fragile and should be handled with care in order to avoid cracks. The warranty does cover both of these problems if they arise.
3 Aqua Clear – Fish Tank Filter – 60 to 110 Gallons – 110v
The Aqua Clear Fish Tank Filter is a small, but powerful filter perfect for little tanks. This is another great pick for beginners who have little to no experience with using a filter. It even comes in a 60 to 110-gallon size just in case this model isn’t quite powerful enough.
This filter has a flow rate of 500 gallons of water per hour. This low output rate makes it perfect for smaller fish or those who prefer calmer water. The filter even has its own special line of filter media. This helps you get the perfect fit for your filter and offers a diverse line of media types.
This filter measures 7.1 x 13.9 x 9.1 inches and only weighs in at 4.2 pounds. This filter is made to be easy to clean and the tubing can be cleaned with a simple brush. This filter uses a three-stage system that uses mechanical, chemical, and biological filtration.
With this filter, you will receive, AquaClear Foam, Activated Carbon and BioMax and Cycle Guard. This filter comes with a 2-year warranty to take care of any issues that may pop-up. The pump is also energy efficient to help save on your electric bill every month.
So, what are this filters downsides? This filter can be a bit noisy making it annoying to keep in your room. You may also notice that this filter doesn’t have a strong enough water flow for your tank. Be sure to clean the filter often in order to avoid any clogging that could disrupt the filter.
4 SunSun Hw303B 370GPH Pro Canister Filter Kit with 9-watt UV Sterilizer
The SunSun Hw303B 370GPH Pro Canister Filter Kit is one of the best filters for 100-125 gallon aquariums. This is a more powerful filter that can give you all the filtering power you need. It can work especially well for more active fish who enjoy more movement in their water.
This filter has an amazing flow rate of 370 gallons per hour. It also works perfectly for both freshwater and saltwater environments up to 100-gallons in size. As an added bonus the included UV sterilizer can help get rid of algae growth in your tank and kill harmful bacteria.
This pump is one of the larger models on the list measuring in at 12 x 12 x 20 inches with a weight of 16 pounds. This pump is self-priming and has a 4-stage filtration system in place. Powerful filtration combined with the UV sterilizer guarantees you crystal clear water.
With your purchase, you will receive, 3 White Filter Pads, 1 Blue Coarse Pad, 3 Media Baskets. Along with this you also get 1 pound of Premium Filter Carbon, 1 pound of Ceramic Rings and 1 Set of Bio Balls. This will give you everything you need to start-up your new filter.
This model does have a few issues that may pop-up. This filter isn’t the longest lasting model on the market. These filters have a tendency to needs parts replaced just after the year mark. The customer service team can also be hard to get ahold of at times which is quite frustrating.
5 AE-SHOP Aquarium Filter Fish Tank Upper Trickle Box Filters System
The AE-SHOP Aquarium Filter Fish Tank Upper Trickle Box Filters System is made to give you clearer water. This model of filter is easy to set-up to make it inviting for all levels of fish enthusiasts. It even uses an impressive amount of filter media to clean your tank.
The filter is made to pump out around 740 to 1100 gallons of water per hour. This makes this filter better for more active fish instead of calm ones. This filter is made to keep you from doing water changes. Just top off your tank when it starts to get low and let the filter do the rest.
This filter measures 38.9 x 10.2 x 4.7 inches and weighs in at around 14 pounds. This filter uses three-stage filtration that uses mutiple types of the same media. This guarantees that the filter pulls the dirt out of your water. Just remeber you don’t get started media with your purchase.
This filter is quick to set-up and won’t take you more than 5 minutes to have running. It even uses a double rain pipe to keep excess water from spilling out. This product also runs great, you won’t have to worry about it breaking down on you out of nowhere with proper maintenance.
This product does have a few downsides though. The worst problem this filter suffers from is constant small leaks. You will have to do some tinkering to keep this from happening or replace the tubing. Make sure to keep an eye out for any water trying to escape from the filter.
6 Polar Aurora 4-Stage External Canister Filter with 9-watt Uv Sterilizer, 525 GPH
The Polar Aurora 4-Stage External Canister Filter is an all in one kit that you will fall in love with. It comes with everything you need to have the cleanest water possible. It has ultra-strong filtration that will have your water looking crystal clear in no time flat.
Like the title states, this filter puts out nearly 525 gallons of water per hour. This output can be adjusted if you have fish who prefer calmer water. It has 4 media trays to give you plenty of space for your favorite media. The trays even have adjustable spray bars installed.
This filter measures 11.5 x 11.5 x 19 inches and weighs a little under 19 pounds. The included UV sterilizer will help get rid of any excess bacteria in your tank. This filter has a self-priming pump, as well, to keep you from having to do any extra work.
With your filter purchase, you will receive, 3x white-fine cotton pads, a blue coarse filter sponge, and 1 pound of activated carbon in a mesh media bag. You will also receive 1 pound of ceramic rings also in a mesh media bag and 50 pieces of bio-ball.
This filter doesn’t come without its own flaws, however. This filter doesn’t have the strong water flow you want all of the time. Sometimes the filter is strong other times it is weak. You will also notice that the filter parts may have to be replaced regularly to keep everything running.