Elive AquaDuo Hydrocorn, Hydroponic Bio Growth Clay Pellet Pebble Media Aquarium Filters, Natural Aquaponics Filtering Perfect Fit: Designed for Elive AquaDuo Fish Tank Filters, its the perfect size for a replacement of the Hydrocorn and enables natural aquaponics filtering. Natural Filtration: Use clay pebbles for an all natural bio aquaponics filtration system that enables a perfect symbiosis between plant and fish. Safe Fish: Clay Pellets keep the pH value of the water constant and keep the water chemistry of your aquarium in balance. Cleaner Water: Clay Media grows beneficial bacteria that break down fish waste and filter ammonia and nitrite by converting them to valuable nutrients for your plants Better Growth: The porous composition helps to promote a strong and healthy root system for your plants and faster growth. Planting media for aquaponics filter systems Bio media helps remove toxic ammonia and nitrites Increased surface area for beneficial bacteria Includes mesh media bag Can be used as bio media in any filter Excellent planting media for hydroponics and aquaponics applications Can be used as media for other houseplants, succulents, and terrariums