25 Pieces Aquarium Fish Tank Filter Bio Balls Aquarium Filtration Bio Ball Durable Easy to Clean Reduces Number of Water Changes, for External Filter, Aquarium, Pond, Aquarium—Black, 26mm

General descriptionThis product consists of 25 durable and practical biological filter balls made from high-performance plastic and cotton. They are designed to supply oxygen to your water and facilitate gas exchange, making them ideal for maintaining a healthy aquatic environment.Technical specificationsQuantity: 25 piecesSize: 26mmCompatibility and accessoriesSuitable for any freshwater or saltwater aquariumCompatible with UVC filters, external filters, and filter pondsUsageEnhances oxygen supply and gas exchange in waterImproves bacteria filtering effect due to its porous designHelps restore natural water quality for fishOther informationEasy to clean and lightweight for convenient handlingReplace only when damaged