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UPETTOOLS Mini Aquarium Sponge Filter, Small Fish Tank Filter Submersible Fish Filter Built-in Air Bubble Stone and Bio Balls for Fish Tanks up to 5 Gallon (Air Pump Not Included)

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$7.59

$ 3 .99 $3.99

In Stock

1.PatternName:Bt301


  • Biological Filtration: This small fish tank filter can help your fish tank provide oxygen, biological filtration, water purification, quiet and efficient filtration without disturbing your fish
  • Mini Filter: The aquarium sponge filter consists of filter sponge and filter stones as well as removable bubble stones. 2.13" W x 2.4" H. Fit for fish tanks up to 5 gallons. Suitable for the breeding and feeding of various ornamental fish, shrimp or fish fry
  • Compact Design: Round compact design, small size, saving space in the fish tank, compatible with air pump wattage >1W. (Air pump and air tube are not included in the package). Please prepare an air pump suitable for this filter according to your fish tank size
  • Safe and Sturdy: The shell of UPETTOOLS aquarium bio sponge filter is made of high-strength ABS material, which is sturdy and durable, environmentally friendly, non-toxic and harmless, and has a longer service life
  • Easy to Clean: The bio sponge filter can be easily detached for cleaning. Rinse the sponge every 2 to 4 weeks with aquarium water. Replace the white sponge every 2-3 months



Product Description

small fish tank filter
fish bowl filter
aquarium sponge filter
mini fish tank filter
small aquarium filter

Angela M
2025-09-05 15:42:56
I just got into fishkeeping as a hobby. This filter is placed in my tank where I quarantine small plants it’s pretty quiet and functions. Well, my sponge is starting to get color to it which means it’s working very well built larger than I thought it was gonna be but I’m OK with that. A small amount of bubbles come out so seems like it would be great for sensitive fish. Seems like it's well-made and sturdy. Very easy to assemble comes ready to use and I just put it on the end of my air hose and it seals well. Great filter and I will be buying more for my other fish tanks
Aingeni
2025-08-30 09:00:13
The media could not be loaded.
karen kempton
2025-08-19 18:01:33
If you have a small beta tank it’s perfect
Peri
2025-07-27 11:01:52
Does not filter well at all. Ok to oxygenate only.
kj6785
2025-07-04 11:42:27
Been in the hobby 40 plus years. These among the easiest to use and effective little filters I have ever used. They are clean able, media can be replaced as necessary and adjustable to use with any small aquariums from a Betta habitat or fry rearing. I found using a small suction cup attached to the supply air line really helped holding in place. Plan using these in all my plant and fish raising set ups. I doubt one can find a better multistage small filter for a better price or quality.
Frank
2025-06-25 15:43:41
The first day was great, the second day it didn't work!
Unikitty
2025-06-24 16:11:09
The media could not be loaded.
V. Rabbit
2025-05-22 13:55:24
This is regarding the UPETTOOLS Mini Aquarium Sponge Filter, Small Fish Tank Filter Submersible Fish Filter Built-in Air Bubble Stone and Bio Balls for Fish Tanks up to 5 Gallon (Air Pump Not Included).I'm making a small water feature for in my living room and I wanted to add a bubbler stone to it, but I didn't have a good filtration system in place yet. This is a great solution as space is limited and I wanted to keep this as low maintance as possible.The set up is simple, but due to its small size, positioning can be tricky.Very discrete and easy to hide.I'm not sure exactly how much water it could actually service if fish were involved.This is a good purchase at this price point.
Anonymous
2025-04-19 16:40:28
I chose this air-filter to use in my 5 gallon aquarium in order to keep the water ammonia-free with beneficial bacteria while providing a very light current.I forgot to rinse it before placing it into my tank, and my betta fish didn’t die. I did do several partial water changes afterwards though.She lived without any current or filter for a year before this, and has adjusted quite well to the low-flow.However, like other commenters have noted, I cannot seem to find replacement sponges for this. So when the time comes I’ll probably switch to a different sponge filter.
Rose
2025-03-26 18:47:39
I have a little 5 gallon tank, with a little betta, and had a HUGE filter that took up way too much space- and the suction was too strong for him (and my live plants). I also hate buying the ready made filters with the plastic pieces that just get thrown away. It's bad for the environment.This little bubble filter solved all of that. It's takes up very little room in my tank, I can add my own filter media, and thanks to the splitter I have on my pump- I can have it eject a small enough stream of bubbles that doesn't disturb my fish or my plants. In fact if you look close enough in the pic, you can see my betta swimming around this. The lighting isn't good enough to see the bubbles- led colored- and the output is low, but it puts out a steady stream of tiny bubbles. My betta isn't stressed now, and I'm not picking plant pieces out of my filter.
Lindalu
2025-03-08 12:16:19
It didn't take long before it needed the filter materials replaced only to discover there are none available. So basically this is a disposable item. I have replaced it with a filter that does have replacement filters. My advice, stay away from this product completely.
Joseph Boutet
2025-01-26 13:30:41
The UPETTOOLS Mini Aquarium Sponge Filter has been a fantastic addition to my small fish tank. It's perfect for tanks up to 5 gallons, providing excellent filtration without taking up much space. The built-in air bubble stone and bio balls work together to keep the water clean and oxygenated, ensuring a healthy environment for my fish. I love how quiet it is, and the fact that it’s submersible makes it easy to hide within the tank. While the air pump isn’t included, it was easy to connect to the one I already had. If you have a small tank and want a reliable and efficient filter, this one is a great choice
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