Review on Filter Balls Aquarium Ceramic Filtration by Nathan Hawkins

I bought this product to fill an empty space in my underwater rock filter which collects a lot of debris in large empty spaces. I had to take the contents out of the box to do this. However, since it's very difficult to clean empty spaces, it usually pushes out the dirt as soon as I plug it back in and it stops cleaning the water. However, with the addition of these biospheres it was reconnected for about 30 minutes and already the water looks cleaner than it has been cleaned for a long time. The biggest plus is that the bag was bigger than expected and I didn't even need the second bag I bought. Like others I did not receive a zipped bag but a different zip which I had to remove. I don't think it can be reattached but I don't need the bag anyway so no problem. To be honest I also added another small filter so I'm not sure how much filtering can be added to these biobeads. All I know is that the filter is now pushing out clean water instead of dirty water with particles.