Review on 🐠 Enhance Your Aquarium's Aesthetics with Panacea Products APN70002 Blue Pan Marbles - 100 Count by Lori Sanders

If you use box filters in an aquarium, you know they tend to float or move around. Adding a layer of beads to the bottom of the filter before adding activated charcoal and dental floss will ensure the filter stays in place. When cleaning the filter, they are easily removed before throwing away the carbon filament. Don't clean the balls as the good bacteria will cling to them and you want those good bacteria to get into the fresh charcoal every time you clean the filter box.