FEDOUR Submersible Aquarium Internal Filter, Filter with Water Pump for Fish Tank up to 35 Gallon (for 3-20 gallon)
$9.97
Price: $9.97
(as of Oct 26, 2025 16:14:56 UTC – Details)
From the brand
FEDOUR has professional production technology and rich experience in the aquarium industry.
We focus on independent research and development of aquarium products.
We are committed to bringing a better life to aquarium pets and giving aquarium lovers a better experience.
New Products
Aquarium Air Pump
Aquarium Filter
Beginning
After years of polishing offline independent production and sales, FEDOUR, which focuses on the aquarium field, entered Amazon in 2019 and began its journey of online sales.
Products
Committed to independent design, production and sales of aquarium products, not only focus on the uniqueness of the product, but also focus on the quality of the product, to create a brand trusted by aquarium enthusiasts.
Service
Reply within 24 hours, give you a great shopping experience.
High Quality
High Standard Testing
7 * 24H Service
[Powerful Internal Filter] Max water flow rate: 80GPH(300L/H), Dimensions: 5.3*1.5*1.1in(13.4*3.8*2.8cm), 4 watts filter suitable for 3-20 gallon fish tank. Water flow can be adjusted according to your own needs.
[Multifunctional Fish Filter] The fish tank filter has two different outlets, a spray bar and an aeration outlet. The spray pipe can allow water to flow out like a waterfall, which has a good filtering effect and allows a small amount of oxygen to enter the fish tank. The oxygenation outlet can effectively oxygenate and adjust the amount of oxygenation.
[Excellent Filtration] The internal filter has excellent filtration performance, it can absorb and get rid of grease and other dirt to clean water. This filter can adapt to biochemical and physical filtration, and it can provide oxygen for your fish tank. 2pcs biochemical cotton are included for replacement.
[Adjustable Water Flow] Slide the adjustment bar on the filter box to adjust the water flow, you can choose the suitable water flow as needed.
[Simple to install] This aquarium filter has strong suction cups, it can be easily placed anywhere in your fish tank.
Customers say
Customers find the water pump to be a decent filter that’s perfect for small tanks and consider it worth the price. The functionality and noise level receive mixed feedback – while some say it works well for betta fish tanks and is quiet, others report it stops working altogether and can be noisy. The flow and strength aspects also get mixed reviews, with some saying it moves water well while others find the flow too strong, and while some find it sturdy, others report bad build quality. The durability is concerning, with multiple customers reporting it broke after two weeks of use.
13 reviews for FEDOUR Submersible Aquarium Internal Filter, Filter with Water Pump for Fish Tank up to 35 Gallon (for 3-20 gallon)
Add a review
Related Products
$9.97
Diego Marzipan –
5-STAR UPDATE: Filter works great, but did NOT receive correct parts to aerate tank
5-STAR UPDATE: Seller refunded my money promptly, which was MUCH appreciated. The filter itself, as just a filter and mover of water, works very well. The aerator will fit the actual pump if you jam it in there, but won’t attach to the spray bar, but c’est la vie. If you JUST want to filter water and NOT aerate, its still great for the price. But I bought it specifically to use the aerator AND the spray bar, which doesn’t work. I appreciate the seller getting back to me quickly and making it right, this alone is worth a 5-Star review on Amazon these days. I will definitely buy one of these again in the future for a future tank build, but for now I’m going to use the refund to buy an aerator and air stone.FEATURES: It has an adjustable flow switch which is nice. At peak flow it is overpowered for my 7 gallon nano aquarium (unless you want to create a significant current, which might be desirable for whatever kind of tank you’re building) but this flow rate works great in my 15 gallon cube aquarium. At low flow it is PERFECT for my 7 gallon nano aquarium, so the filter can be used in a variety of tanks. I will almost certainly buy one of these again in the future for other aquariums, the spray bar feature is great and very versatile, as you can keep it below the water line to motivate water, you can aim it in multiple directions and swivel the nozzles, AND you pop the bar above the water line to slightly aerate the surface of the water and create a nice waterfall effect. The filter media reservoir is large enough to fit many layers of media if you want to customize the filtration (I’m using loose carbon media in a media bag, a polishing media pad and carbon pad). All in all, for the price, it’s hard to beat. The suction cups can pop out a little too easily, and for some reason the top of the filter has a lid that can come off too easily (I can’t tell what it is supposed to be for, as it doesn’t expose any working part), but that kind comes with the “$15 filter” territory, and the other features more than make up for it.!!!One important note is that the slits to the intake/filter media, while very small, are still too big for tiny fish fry or baby shrimp to avoid getting sucked in to the filter.. Even expensive filters have this problem and I fixed it by super glueing a strip of filter media bag around the intake of the filter, it took about 3 minutes. See the fix in the pictures (it’s the white material at the bottom of the filter.).ORIGINAL REVIEW: So far the actual filter and water pump work great, but the part I received that I was hoping to add an air pump feature to the tank does not fit anywhere and does not visually match the described part I thought I would receive.. It is filtering well (I used different filtering media than what it arrived with, although if your just looking for a large detritus filter and water agitation and O2 aeration, this filter is absolutely great, provided you receive the advertised parts) and moving water almost ENTIRELY silently (It really is super quiet), but it didn’t come with the part I wanted and that was described in the description that would also allow me to add O2 to the tank.SEE ATTACHED PHOTOS. I WOULD HAVE EASILY GIVEN 5 STARS IF PARTS WERE CORRECT!
A. J. Bertine –
Very good for the price
This is a pretty decent little filter. It keeps my tank clear, it’s super quiet, and it’s very adjustable. I recommend it for betta tanks, as it does not create a super strong current that might distress a betta. It is a little flimsy feeling and it is constantly tilting sideways on the glass from the lid pressing on the cord, but that’s fine, it’s not in there to be decorative. After a few weeks the sponge developed a good bacterial colonization and it’s working well both physically and chemically to keep my water clean. I have it in a 10 gallon tank and it works.
Amazon Customer –
Not quiet but good customer service
Seems to work as advertised but the impeller is very noisy.Update: I contacted the seller (Ibay-Life) about the noise and they were very responsive, immediately offering to replace the item or refund the price. So it seems you can expect good customer service if you have an issue with the product.
Matt and Pais –
Stopped working
I am constantly having to mess with the filter to get water flowing and now after 2 months it has completely stopped letting water through.
Katie Anderson –
Flow is too strong
While small and compact, the flow is too strong even with it on the lowest setting. I do not particularly like this filter. I donât recommend
Amazon Customer –
Works great for small tanks
Great little filter that I use along with a sponge filter to help agitate the water surface. I add filter floss so it helps clear the water.
Brunoinator –
easy to clean, just rinse the sponge and your done!
this filter has been amazing on the tanks ive had it on, super easy to clean too
Adrienne romiski –
Doesnât work right
Loud and fountain doesnât work. I have it in a 5 gallon tank.
Roberto C. Fernandez R –
Nice
Andrew J. Smith –
Iâve converted a top fin 8 gallon dazzle tank into a nano reef tank. This is perfect to increase filtration and flow for nano tanks with corals. Necessary as with this tank you canât increase the return pump output. Itâs small enough to be hidden behind rock work once I get it all setup properly.
Olivia Van Kessel –
stopped working correctly not even one month after purchase. super loud, and inflow is super inconsistent.
Bree –
Works really well for price! I had to leave it on overnight before it started to pump water properly but then it was really powerful! I was concerned at first that it wasnt working but now its prefect
Brad Forwell –
It is a powerful and versatile pump, and I wish my beta didn’t hate it, but it is just too powerful for his little 3-gallon aquarium.