Review on Bluecell 12Pcs Pre Filter Sponge Aquarium by Amanda Dolan

Excellent pre-filter as I have red cherry shrimp and shrimp in my tank. This sponge is very thin so it protects my filter from sand that I pick up during maintenance. Also, baby red cherry shrimp are so small, but thanks to these pre-filters, I don't have to worry when my baby sucks. The problem is that the sponge is so thin that I have to clean it frequently when it otherwise becomes clogged and not letting enough water into the filter itself. I have no problem cleaning them once a week, usually when I see it happening, but it's not great if you're out of town.