Review on Efficient Filtration with XINYOU XY-2893 10 Layer Sponge Biochemical Water Corner Filter by Will Moorehead

I bought two of these to try but only one is currently being used in my dad's aquarium. Here's a list of what I've noticed: First, it's harder to dip than any other sponge I've had. It took two days of constant pressure to make him drown. But even then it's not weighted enough to stay where I put it. It moves a few inches from where I put it. The air intake is a bit flimsy for me. I was worried about breaking it during installation, but it's pretty flexible. I've noticed that some people say it's loud, but it's no louder than our other sponges. I have a very hard time imagining dimensions when I read dimensions. I was expecting it to be a lot smaller than it actually is. He's doing his job, that's a good thing. Overall I would buy again.