- hygger Small Aquarium Bio Sponge Filter Mini Fish Tank Filter for Breeding Fry Betta Shrimp Tank 2-5 Gallon (Small)

I'm not one to leave reviews, unless absolutely necessary. This is my second review in maybe ten years, and this product deserves a review! I'm not a professional, but I have a decent amount of experience with fish/plant aquariums. As of now, I only have a small tank setup and have been experimenting with self sustaining ecosystems, which I have accomplished. I went back to using a filter to enjoy more creatures in my tank and handle the heavier bioload. I've been experimenting with hang on back filters, internal power filters and different sponge filters. I decided to try this filter also on and off for about a year, because of its unique appearance. Here is my experience.. I keep going back to this filter! It pulls, but very gently. The build quality is nice. It's suspended off the substrate, which frees up a lot of space. It keeps my water stable and clear. The fish behave more naturally with this filter also, which I get mixed results with other types of filters. I don't know if it's the setup and combination of the sponge and media, but something about this filter keeps a healthy tank. Cleaning this filter is very easy. Just pour out the media and separator into a container with water from the tank, give the top a firm tap like a ketchup bottle, and the sponge comes out. Squeeze the sponge in the cycled water a couple times then reassemble. There's really no need to share pictures of this product, there's enough of those in the reviews. My only complaint is the suction cups do slowly release from the glass in a couple weeks. I don't know why some companies still have a difficult time supplying reliable suction cups for their equipment.. I'm probably going to make a hanger for this filter in time to replace the suction cups. Suction cups aside, this filter deserves a five star review for its effectiveness, ease of use and appearance!

This 3-in-1 filtration system is definitely worth the hype. It’s been going viral on TikTok lately, but I actually discovered it through Amazon. After using it, I can confidently say—it lives up to the praise. The filter does an excellent job of clearing up the water fast. Honestly, it started working within 10 minutes of setup. My tank looked noticeably clearer almost immediately. It also adds oxygen and uses biological filtration balls, which help keep the water clean and healthy for my fish. I’ve tried a few cheap filters before, and the difference is night and day. This one had a ton of reviews, and now I understand why. It’s powerful, but gentle—the water flow doesn’t stress out my fish or force them to swim harder, which I really appreciate. One small tweak I made: I replaced the black sponge that came with it. It felt a bit too flimsy and wasn’t catching much debris. I swapped it out for an AquaClear sponge, trimmed to fit the original size, and the difference was huge. Better filtration all around. If you’re starting an aquarium or just looking for an affordable, reliable in-tank filter, this is the one. Sure, there are TikTok deals, but I stick with Amazon and I’m glad I did. Five stars from me.

My friend has this same filter and it works great. I ordered it and it didn’t work at all. I hooked it up to my pump and nothing happened. I then tried to blow through the tubing myself and no air was passing through no matter how hard I tried. Upon disassembling and checking it, there is nowhere for the air to go. The inlet is a sealed up piece of plastic… as if they failed to drill it all the way through. This is a pretty serious manufacturing defect. I’m quite disappointed, as I own other Hygger products and have always been happy with them. This one is certainly a miss.

I like the compact design of this sponge filter, it has a very small footprint taking up very little space in the aquarium. It works pretty well for filtration in a nano tank and could probably be good up to 10 gallons if the tank is not overstocked with too many fish or heavy-bioload fish. Some things that could be improved: There needs to be an easier way to access the sponge from the bottom for cleaning/maintenance. The current design makes it such that you have to take out all the filter media above, the division plate, and then you can finally access the sponge at the bottom - then good luck putting everything back as-is after cleaning. The other issue I had is with the suction cups. They work well for about 1-2 days, then it would lose suction and I would have to stick them back on to the tank glass, over and over again. I got fed up with it and decided to ditch the suction cups and add some kind of DIY magnetic attachment system. Research told me that regular magnets are not safe as they can deteriorate, rust and leech into the aquarium water. Only magnets which are fully-sealed, enclosed in rubber or plastic are safe for aquarium use. With that, I discovered "Sew-in Magnets" / "Sewing Magnets" - magnets designed as fully waterproof magnetic clasps for sewing into coats or bags. It was perfect for modifying the sponge filter, but I needed 2 pairs of magnets to hold the filter in place. If you are struggling with the included suction cups, this is a possible fix for you as well. Other than those issues, I really like this compact sponge filter.

I bought this for our shrimp tank. I really like that I can add bio media in it as well. The bio balls seem good quality but I actually replaced them with crushed coral to help regulate the ph. I’m replacing a regular sponge filter with it. So far it puts out a lot of larger bubbles but that’s fine, but does make it just a bit louder than the previous filter. Not obnoxiously so, but noticeable. It will be more complicated to clean this one than the previous filter as well, but again since I can use the bio media I’m okay with that. I can’t speak to how well it works yet, the old filter was actually pretty good at keeping the tank clean, and the sponge on this filter is half the size. I’m hoping this works well, fingers crossed 🤞🏻

Funciona perfecto para peceras de 10 litros

I wouldn't use this as a primary filter but it's good for airflow and a little extra filtration doesn't hurt.

Working great love it

Malísimo, primero no explica que debes comprar adicional una bomba de aire y aún cuando la compras el conector de la manguera está tapado por lo que no permite el paso de aire por ningún espacio. Tiene error de diseño o algo similar dado que es imposible qué funcione

El producto se ve de buena calidad y bastante práctico. Sin embargo, el que yo recibí tenía una fuga por donde se salían las burbujas y por lo tanto el filtro no cumplía su función.