Good working and cute

Beware - this filer only worked for 4 months ! I bought it to use in a 1 gallon tank so it definitely was not being overused . Very disappointed.
I did get ahold of customer service and when I told them what was going on with the filter , they sent one immediately !!
I am very pleased with how they resolved the issue .

Great at filtration, and it's great that it has the sponge and the media to help hold in beneficial bacteria. That being said, the sponge is a pain to clean and seems to foul up easily (and I'm out of replacements - need to order some more). The sound is really dependent on your air pump so I just gave it a 5.

Tried a couple of internal filters but had no luck keeping my tank cleaned even for the week. No luck with the black internal sponge filter nor small hybrid sponge/biomedia both purchased from AMZ.
I was changing the water every wk. This hobby shouldnt have to be that much work. Decided to browse all over AMZ for a suitable sized filter to try. Finally I think I found a keeper. Ideally I wished it was smaller and less bulky in appearance, but it works so hey. I currently have a jumbo glass container to house shrimps, snails, cories, and endlers. Small bioload overall, but my ramshorns are the biggest problem, leaving cloudy waters within the week (I don't overfeed).
For now, I was surprised to actually get much more visibility into my tank. It is like having an updated TV with higher resolution. My water used to be clear with the old filter methods but overtime, those filters stopped being as effective despite cleaning with every tank maintenance. Hopefully this will stay functional for a long time.
My shrimps been clinging onto the sponge filter ever since I swapped my filter.
Noise - barely noticeable.
Output - depends on your air pump. Mine is non adjustable so outflow is not too strong.
Set up - super easy straightforward. No manual needed.
Sponge is green colored which helps me keep an eye on my shrimps. Would prefer black spronge tho.
Try it for yourself! Good stuff

I love this filter!! Cleared my water in a very short time and is very low profile. It came with an extra sponge and ceramic media balls. My Betta loves it and he doesn't get blown around from the current like he did with the in tank filter he had.