AQQA Aquarium Sponge Filter Submersible Fish Tank Filter Ultra Quiet Aeration Bio Sponge Corner Filter for Breeding Fry Betta Shrimp Fish Tank (Small for 5-20 Gallon)

Super easy to use, cleared the water in our 5 gallon tank overnight. Definitely faster but I'm not trying to put a time to it. Water was very dirty before, now clear. There is no additional noise if you already had an aerator. Works great, great price, definitely recommend. The only negative I could think of is, its kind of large for our 5 gallon but I'm hiding it behind Squidwards house.

Works great, good quality. I did have to shove a piece of coarse foam down the output hole because my betta thought it was a tube for him and I was afraid he would get stuck. Maybe if the cover had some sort of grid on it to prevent bigger fish from going into it?

Have had it hooked up for a short time now but so far so good as it seems like a well functioning sponge with the bubbles coming out finely without an air stone added which I like, I also really like it conceptually with it being the only stand alone single sponge filter I've seen with a media tray added you can add to which is a nice feature for a sponge filter. My only complaint is the media tray was not easy to pry off even using a butterknife and it slightly broke on the one side it seemed despite being gentle about it. Thankfully I could snap it back it place but it wasn't easy and makes me reluctant to want to do so again to mess with the media in the tray at all, so I gotta dock a star for that. Still good otherwise though.

Works great! I’ve used this attached to my outdoor solar aerator for a fish bowl I sunk into a planter. This simple filter & box has held up to the extreme temperatures, does filter the water, and has allowed me to switch to changing water every few days to a couple weeks. If I cannot change the water, I’m able to slip the sponge off, squeeze it out in clear water & rinse it clean. (I can only do this because I permanently removed the sponge cap after one of my small fish wedged himself in it & passed; I saw the diameter was the same, so it didn’t take away any safety features.) I never have issues with it floating- it’s easy to transfer the sponge while soaking & slip it back over the filter box. The filter effect is strong enough that I actively have to remove pieces of water hyacinth roots! My fish is happy & survived a HOT Summer on a southern exposure patio- the filter kept the algae down to the point one fish was able to keep up with the bit that grew. I have tried a few different set ups to keep this bowl clean & going, I was even told by a pond store it was next to impossible & I’ll kill my fish in the heat. I closely monitored it throughout the Summer & am SUPER PLEASED with this product’s performance OUTDOORS! Not only did it filter & aerate, but it kept the plants healthy, which enabled them to provide proper shade & protection for my fish.

This is my all-time favorite filter for fancy Gold Fish tanks! These are nice quiet filters. Sponge filters are known to be quiet in general and are good for goldfish, due to their addition of aeration to the water without the intense water flow of many of the waterfall type filters. I love these specifically because they are a combination both sponge filter and also ceramic filter media in the bottoms. It gives you a little of both styles of filtration without taking away from the sponge filter portion. ( You will need your own air pump and hose but this is the same as any other sponge filter. ) For cleaning you can just disconnect the air hose and pull them out. You can remove the little plastic piece that keeps the sponge on ( it just snaps off but can take a little effort). Then I squeeze the sponges in non-chlorinated water until the water is clear. I rinse out the stones without removing them from the bottom and resemble by putting the filter and cap back on. It is simple and doesn't require scrubbing out pipes and tiny motors etc. It also refuses the same filter for months, you just rinse it out and reuse it. ( They do send an extra sponge for when the original one wears out, but they are not like the little slot filters that are supposed to be replaced every month!) I have had one of these filters in my tank for over a year and the sponge is still far from needing replaced. 10/10 I recommend these especially fancy goldfish since they don't do well with strong currents. I recommend them for anyone with freshwater tanks though. I don't see myself buying any other filters any time soon.

This is fine for my 10 gallon tank, but it does not look like the image because the sponge was compressed inside a tight plastic bag and ended up permanently shaped that way. The instructions did not match what I received; the top was already attached tightly and the airstone was already installed, and the ceramic media was already in the base of the filter. In fact, due to the instructions telling me to assemble these parts and the way the sponge is squashed, I wondered if they sent me a filter that had been returned to them. Nonetheless, I hooked it up and put it into my tank. Despite my following the instructions to squeeze the sponge underwater many, many times, the filter still sits at a jaunty angle and will not sit flat, making my tank look hastily put together. I think there's probably just air trapped in the ceramic media making it float a little and hopefully this will amend itself over time. I have not had it long enough for the media to develop a good bacterial colony as yet so I cannot vouch for the filtering quality, but the function looks good so far with the airstone streaming a decent amount of bubbles and creating ample water movement for 10 gallons. So while I am not ecstatic about the surprises that made me feel uncertain about it, I have no reason to doubt its efficacy as yet.

First of all, the manufacturer's video for this product was great! I strongly suggest you watch THAT video before you watch the videos associated with reviews! I did. Then, when I watched the first 3 customer review videos, I was surprised. Yes, I was laughing, BUT I'm sure they're nice people as they were considerate in making a video, so I hope they figure it out. Or perhaps, that's the way they want to use this filter. I mean, even I am not going to use this in the exact and intended manner! They were leaving the TWO sponges intact, as it was shipped! Now, that won't kill your fish, but water has to be able to flow, to some significant degree through the sponge. The sponge is already quite dense which increases the surface area exponentially, allowing more beneficial bacteria to grow and consequently allowing that bacteria colony to consume more microscopic feces before it turns into ammonia,...so smooshing two sponges together (which btw was a smart thing for the manufacturer to do because it saves them a whole lot on shipping, on storing inventory, on the costs for packaging, etc.), blocks the water flow that you would have benefitted from. At first I was hesitant to comment on this, but I figure, I better share the limited knowledge I have ...and someone may correct me if I am wrong, and then I can learn too. The material seems sturdy enough, but I learned the hard way not to tinker too much, or else I'll have a full-on MacGyver job on my hands. The sponge seems like it's dense and made of good stuff that will last. Sometimes sponges arrive with a foul smell; not these. But JIC, I'm soaked them and rinsed them well. The plastic topper/cap that anchors the sponge seems to fit best if you line up the clamps and the grooves. These are tiny, so you have to look closely. This plastic might not last for years, but it'll do for now. In order to access the compartment where the ceramic bio balls are, you have to use a thin, flat screwdriver or something comparable. This is not the greatest design for me to be changing out the carbon, but hey, I created this challenge for myself by not using this filter in the exact way prescribed. Again, the plastic itself, as well as the open-close repetition will eventually break the areas that snap into place. I accept. So... I threw out the bio balls. I added my pelletized carbon, reassembled everything and then squeezed the air out of the sponge as I tried to submerse the filter. Because my air pump is so strong and because there is not any significant weight to hold the contraption DOWN without the bio balls, I had to open everything back up and add a couple of stones for weight. None of the carbon has escaped yet, so that's success :) And it stayed down. The bubbles. OMG it's a geyser of large sized air bubbles. I have a super strong air pump... with a cheap, crappy gang valve (but that is really the only kind in our local pet stores), so it was either feast or famine because there is no such thing as fine-tune adjustment on a cheap gang valve! There does not seem to be an airstone within the column, and after I tried to pull on the pieces a little... I decided not fix something that ain't broken. So it just comes gushing out Not a bad thing, I guess. Since a lot of the pieces, as well as how they are assembled, are shown in the manufacturer's video, I avoided posting any of the parts. The video here shows my two sponge filters running. The one at the edge is the typical sponge on a pedestal. The one which is more or less centered in my video is the AQQA filter. I think this is a nice looking sponge filter. It is definitely not the ghetto, cheap clear plastic "box filters" of the 1980s where you added filter wool and "charcoal". Nor is it the typical round sponge filter on a pedestal that just looks ugly. If I had a display tank that required a sponge filter, this is the one I would choose. For me, I wanted to add chemical filtration to my pond where I breed veil tail rosy barbs. I am hoping this filter keeps them healthier and allows me at least a few day more between water changes.

Alright, this filter is a dumpster fire it’s just a large air stone, it has not filtered water at all infact I added my canister filter back on and will be taking this out. My catfish got stuck and I had to pull him out injuring him in the process.