Just when you thought your aquarium was as clear as a summer day, tiny particles and debris start floating around like they own the place. But fear not, because the Fluval FX5 Water Polishing Pad is here to save the day! This extra thick, micro-fine polyester pad is like a superhero for your aquarium, trapping those pesky particles and keeping your water crystal-clear. Perfect for both freshwater and marine tanks, this pad is an essential addition to your aquarium maintenance arsenal.