Pet Supplies : Premium Charcoal Filters for PetSafe Drinkwell Fountains, Pack of 10 : Amazon.com
Amazon.com : EnviroSupply 12x40 Mesh Size Coconut Shell Activated Carbon, Premium Charcoal Filter Media for Aquarium and Water Filtration (Removed Odors and Discoloration) - Resealable Bulk 1 Pound Bag (455 Grams) : Pet Supplies
HEPA Replacement Filter E; For Model AC4100 (2 pk.) - Sam's Club