Keep your aquarium water crystal clear with these high-quality replacement foam filter pads designed specifically for Fluval FX4, FX5, and FX6 filters. This 6-pack of filter media pads helps maintain optimal water conditions by trapping debris and providing surface area for beneficial bacteria growth. The foam pads are precisely cut to fit your Fluval filter system, ensuring maximum filtration efficiency and proper water flow. Regular replacement of these filter pads helps maintain your aquarium's biological balance and keeps your fish healthy. These replacement pads are easy to install and provide reliable mechanical and biological filtration for your aquatic environment. Compatible with Fluval FX4, FX5, and FX6 filter models, these foam pads are an essential component of your aquarium maintenance routine.