AQUANEAT 3 Pack Aquarium Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank(M Large up to 50Gal)

First, it is a good idea to mod these to use an internal air stone. Use snips of some kind (like small side-cutters) to cut space on the inside, then attach a small air stone (0.6" cylinder worked for my "small" sized filter) inside the filter from the cap using the tubing. Doing this will make the filter create finer bubbles, providing better filtration and less water surface disturbance. It will also quiet the bubbling from the filters down quite a bit. Sponge filters are great all-round filters, and work well for fish that don't like movement (like Bettas). You need an air pump and airline tubing to use them, though. They won't flood the ground around the tank like other types of filters, and they don't really break (air pumps do, though). They are a little unsightly and harder to hide than some hang-on-back filters, but not impossible. This particular sponge filter is about as good as any other, with some caveats. Some aquarium experts recommend larger, open-cell sponges for their filters, which will clog up less than the fine closed-cell sponge on this filter. Because of this design, you will need to clean this filter more often than you otherwise might need to. It does work, though. Also, this filter is not quite weighted as much as it should be. Even when fully soaked, it's a little too buoyant. A good sponge filter should sit comfortably on the bottom of the tank. Do not ever replace the sponge, by the way. To clean it, you pull it out of the tank and squeeze it out gently in the old tank water during a water change. The sponge may last years, and will harbor beneficial bacteria for your tank. If you replace it, you will mess your tank up. To replace a filter with another, you want to run the old one alongside the new one for a least a few weeks to help the bacteria colonize the new one.

I use these as emergency filters, I added one to two of my tanks so I always have an emergency filter to put in an isolation or emergency tank, it’s been super helpful. They aren’t huge so they work to do the job and not take over the tank, I love sponge filters because I keep shrimp. It kept my last emergency tank alive since this time I had them on the go, I can’t say if right out of the package they would have helped, but if you give them time they do wonders.

Perfect for what I was looking for, definitely get your moneys worth. I use them for my 5gal shrimp tank and it works wonders.

Works well in a 60 and 90 gallon tank. Originally switched from a large waterfall filter to these sponge filters when the waterfall filter started getting too loud and having parts wear out from sucking up sand. Since these sponge filters don't have moving parts and uses air to filter, you don't have to worry about parts breaking, just squeeze out the sponges during water changes and occasionally take apart the plastic to clean off buildup with vinegar. Can also rinse the sponges out into other tanks to introduce microbes and waste to new systems. Recommend getting an adjustable air pump to control the level of bubbling. Works well with floating plants and water roots. The sponges started showing wear after about two years.

A little bigger than I was expecting, almost too big for my 2.5 gallon tank but I’m sure it will do its job well. it lost a star because even though it feels substantial in the hands, my kid messed with the tank and it floated straight to the top pulling some gravel and a plant bulb with it. Great looking product, the base just needs to be a little heavier. (Just for scale in the photo, my hands are pretty big)

I’ve tried various aquarium filters over the years but have never really been impressed with any of them til now. I had read about how sponge filters were a good option for bettas as they provide a more gentle flow compared to HOB filters as well as helping to oxygenate the water. After watching a video explaining how to use sponge filters, I knew to get an air pump beforehand with an air stone, it was a bit tricky fitting the air stone inside the filter but I followed the directions on the tutorial video I had watched and figured it out. I’ve only used it in my betta’s tank for about a couple of weeks now but it’s already made such a difference with the water clarity, before it was always a little cloudy but now it’s crystal clear. I decided to clean out the sponge while siphoning the tank yesterday and so much gunk came out after the short amount of time of being the tank. I also love that not only do I no longer have to buy new filter cartridges every month, I probably won’t have to replace this sponge filter for a very long time (til it falls apart anyway). I never thought such a cheap and simple filter would outperform the larger, more expensive filters.

Hook an air tube in to these and you are good to go. I use these in addition to other filtration and they work great. Clean them occasionally and they keep the water very clean. The sponges are very rigid, I have cleaned my countless times and they still work great

Great product for the price. Filters my tanks well. It is a bit cheaply made tho, I had one them brake apart but I’m not mad for how cheap they are. Good size as well, easy to hide.

Great size for my 5 gallon tank. Was confused when the packaging didn't say Aquaneat on it. Instead it said Xinyou, and it had a different model number, but they are the same size and seem to be decent quality. The sponge is much thinner and coarser than the Seapora one I had in the tank, but I'm not concerned since my betta fish doesn't produce much waste, and I routinely take out uneaten food and waste after feeding him. I rinsed everything in my tap water first, and I floated the new sponge in the aquarium for 3 or 4 days before setting it up, and am leaving the sponge from his old filter in the tank for at least the rest of the week to ensure I colonize the new smaller filter sponge with the good bacteria. I never bothered modifying this filter to fit an air stone, since the inner chamber was pretty narrow and I figured the bubbles would be pretty small coming out of the upper openings. I was right...the bubbles aren't too big or loud. It might be a bigger issue if I had the air flow turned up on full power. You can see in the picture where the gravel went around the base if the old sponge filter, now it looks like a crater around the new one lol. I'm happy that Angel has more space to swim around now.

It's not the exact same product as in the pictures. The sponge foam in the photo seems coarser and more porous, while the ones I got are much less so. Functionally, it works fine as a sponge filter, but the less coarse the sponge, the more often you have to clean it.

Described as pack of 3 but only 2 arrived

Bien pour une 2gallon apeupres trop petit pour une 5 gallon à mon avi . Un brin déçu je m'attendais qui serai un peut plus gros

Will get more