
Top Fin is a popular fish tank setup for beginners, known for its high-performance filters and commitment to aquatic health. The Top Fin filter is an internal power filter that helps to maintain water clarity in your aquarium, keeping the water crystal clear and promoting a healthy ecosystem. It is designed to remove unwanted organic waste, heavy metals, odours, pigments, and chlorine. The filter is adjustable and can be used in 5, 10, 20, or 55-gallon tanks. The blue plastic piece in the Top Fin filter is a bio cartridge that slides into a separate slot and is responsible for absorbing odours, pigments, and chlorine.
| Characteristics | Values |
|---|---|
| Purpose | To maintain water clarity in the aquarium |
| Filter type | Cartridge-based |
| Filter design | Plastic bio-grid with a replaceable cartridge |
| Filter media | Bio-balls, carbon, blue plastic bio cartridge |
| Filter performance | High-performance, advanced filtration system, whisper-quiet |
| Filter capacity | Suitable for 5, 10, 20, 30, 55-gallon tanks |
| Additional features | Adjustable flow, LED hood |
| Maintenance | Easy to maintain, replaceable cartridges |
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What You'll Learn

Top Fin filter cartridges
Top Fin is a popular and well-known brand of aquarium kits and filters. Their filters are designed to maintain water clarity and cultivate a healthy ecosystem for aquatic life. Top Fin's filter cartridges are an integral part of their filtration system, working to ensure that the water in the aquarium remains crystal clear and free of unwanted substances.
The Top Fin filter cartridges come in a variety of sizes, catering to different aquarium capacities, including 5, 10, 20, and 55-gallon tanks. These cartridges are designed to be replaced periodically to maintain optimal water quality. The replacement process involves carefully removing the dirty cartridges and disposing of them appropriately, such as in a sealed plastic bag placed in a garbage bin.
The cartridges themselves are often blue in colour and made of plastic or mesh material. They are designed to absorb odours, pigments, and chlorine, playing a crucial role in maintaining water quality. Additionally, the cartridges help to remove organic waste, heavy metals, and other contaminants from the water. It is important to note that the cartridges should be removed when medicating the water, as the carbon within them may absorb some of the chemical treatments.
The Top Fin filter cartridges are also adjustable, allowing users to customise the water flow rate. This adjustability makes them suitable for a range of aquarium setups and ensures that water circulation is adequate without being too turbulent for the fish. Overall, the cartridges are an essential component of the Top Fin filtration system, contributing to the health and well-being of aquatic life by providing reliable, multi-stage filtration.
Top Fin offers a range of aquarium kits and filters, including the Top Fin Silentstream Power Filters, which are known for their quiet performance. The brand is recognised for its high-performance filters, durability, and commitment to aquatic health, making it a popular choice for beginners and experienced aquarium enthusiasts alike. The adjustability, ease of maintenance, and effective filtration provided by Top Fin filters contribute to their popularity in the aquarium industry.
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Top Fin aquarium kits
Top Fin is a leading brand of aquarium products, including aquarium kits. Aquarium kits are a convenient way to purchase all the components required for an aquarium in one package. Top Fin offers aquarium kits in various sizes, including 5, 10, 20, and 55-gallon tanks.
The Top Fin 5-gallon aquarium kit is a reasonably priced option for those looking to set up their first tank. While it functions as expected, some users have noted that the plastic trim is slightly warped, detracting from the modern look, and the filter that comes with it can be loud.
The Top Fin 10-gallon aquarium starter kit is another popular option, offering excellent quality and value. The tank is made of clear, durable plastic with no leaks or cracks. It includes an LED hood that provides great illumination and an internal power filter to keep the water clear, with adjustable flow.
For larger tanks, Top Fin offers a 20-gallon aquarium kit, which includes a Silentstream Power Filter. These filters are designed to operate with whisper-quiet performance, an improvement on the standard filters included with smaller kits.
In addition to the standard components, Top Fin also offers a range of accessories and additions to customise your aquarium. Artificial plants, for example, can be a safe and decorative option, provided they have no sharp edges that could tear fins. Live plants are also an option for a more natural look.
Overall, Top Fin aquarium kits provide a convenient and relatively affordable way to set up an aquarium, catering to various tank sizes and offering a range of features to create the perfect underwater environment for your fish.
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Top Fin filter settings
Top Fin is a brand of aquarium kits and filters. Their filters are adjustable and come in a variety of sizes, including 5, 10, 15, 20, and 55-gallon options. The Top Fin 20, for example, has an adjustable flow rate of up to 200 GPH, which can be customised to suit the needs of your tank.
To set up the Top Fin 20, first, assemble all parts of the filter system according to the included directions. The intake tube, filter box, and adjustable outflow nozzle all fit together via simple connectors. Make sure the filter is unplugged before beginning setup to avoid motor damage. Rinse the filter media under cool tap water to remove any loose dust or debris, but never use soap as this will remove beneficial bacteria.
Next, layer the filter media in the following order: biological filter balls or rings, activated carbon insert, another layer of biological media, and finally, the mesh pad on top. Hang the filter box on the back of your aquarium using the built-in hooks and submerge the intake tube. Prime the filter by filling the box with aquarium water before plugging it in.
To adjust the flow on the Top Fin PF20, you can change the nozzle size. For example, changing the nozzle from 0.4mm to 0.2mm will increase the flow rate.
Top Fin filters can be noisy, but there are ways to reduce the noise. One user reported that replacing the lid that came with the filter with the lid from an AC30 filter made their Top Fin filter nearly silent.
Top Fin filters can also be improved by using different filter media. The filters are spacious, allowing for customisation with different media types. Some options include sponges, Biomax inserts, carbon, filter floss, and poly-fiber.
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Top Fin filter maintenance
Top Fin manufactures a range of filters for aquariums, including the Silenstream PF20, the 5-gallon aquarium kit, and the canister filter. Top Fin power filters have an adjustable flow rate, allowing users to increase or decrease water flow by rotating the output nozzle.
To maintain your Top Fin filter, it is recommended that you regularly check for any debris or dust in the filter and clean it out. This can be done by rinsing and wringing out the sponge in tank water. It is also important to monitor the temperature and adjust the heater accordingly, as well as to keep an eye out for any signs of leaks, such as beads of water on the outside seal or condensation on the glass panels.
In addition, the filter cartridge should be replaced periodically. When replacing the cartridge, you can cut away the white felt material from the plastic cartridge frame and place it in with the new media to transfer beneficial bacteria over. Alternatively, you can install a sponge pre-filter on the intake tube to start colonizing more bacteria.
The blue plastic bio-grid that comes with the Top Fin filter is intended to create surface area for beneficial bacteria to colonize. However, some users have found that removing it and replacing it with other media, such as a sponge or a bag of bio-media, provides more surface area and helps to catch muck and act as a mechanical filter.
Overall, regular maintenance of your Top Fin filter, including cleaning, monitoring temperature and leaks, and replacing the cartridge when necessary, will help to ensure the health and safety of your aquarium.
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Top Fin filter alternatives
Top Fin is a leading brand of aquarium kits and products. Their products include a range of aquarium kits of varying sizes, from 5 to 55 gallons. The kits come with a plastic trim and an internal power filter, which is adjustable and keeps the water clear.
The Top Fin filter is a cartridge-based HOB (hang-on-back) filter with a plastic bio-grid and a replaceable cartridge. The cartridge contains blue plastic and charcoal/carbon. The blue plastic piece can be omitted if it doesn't fit in the filter with the other pads.
Some alternatives to the Top Fin filter cartridge include:
- Filter sponge: A filter sponge can be cut to size and used in place of the cartridge. It can be rinsed in old tank water and reused for a year or more.
- Ceramic bio-media: This can be used in the same way as a filter sponge and is also reusable.
- Protein skimmer: For saltwater tanks, a protein skimmer may be a good alternative to the Top Fin filter.
- 3D-printed frame: For the Top Fin Power 20 Sil Stream filter, a 3D-printed plastic filter frame can be used to easily replace the filter media.
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Frequently asked questions
The blue plastic Top Fin filter is a popular fish tank setup for beginners. It is an internal power filter that helps to maintain water clarity in your aquarium.
To change the filter cartridge, first, remove the filter lid by pushing it up with both hands. Carefully lift out the dirty cartridges and dispose of them appropriately. Then, pour water into the filter box and push the lid back on until you hear a "click" sound.
You will know it's time to change the filter when you see a "red" marker on the lid instead of a "blue" one. This indicates that gunk has built up and it's time for a replacement.











































