AQUANEAT Aquarium Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank, 3pcs (Large up to 60Gal)

I’ve been using these small sponge filters that connect to an air pump line for months, and they are just as effective as the more expensive hang-on-back (HOB) filters that pump water. These simple yet highly efficient filters provide excellent biological and mechanical filtration while maintaining gentle water flow—perfect for fish, shrimp, and fry tanks. One of the biggest advantages is their ease of maintenance. Every couple of weeks, I simply dip the sponge in dechlorinated water and squeeze it a few times to rinse out the sediment. It’s important to use chlorine-free water to avoid killing the beneficial bacteria that help keep the tank healthy. Compared to traditional HOB filters, sponge filters are **cost-effective, quiet, and reliable**. They don’t require expensive replacement cartridges, and they run smoothly as long as the air pump is functioning. They also provide great aeration, which is a bonus for oxygen-loving fish. Overall, I highly recommend these small sponge filters for **any freshwater aquarium**. Whether you’re a beginner or an experienced aquarist, they’re an affordable, low-maintenance, and highly effective alternative to pricier filtration systems.

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.

I appreciate getting 3 to a pack, when one is dirty I just pop it off and pop on a clean one. Seem to be working fine and holding up so far. I have a shallow tank for my ADFs so I don't use the protective tube and with out it the pump and filters seem to aerate and filter just fine.

Described as pack of 3 but only 2 arrived