Anjon: Pond Rescue Beneficial BacteriaBeneficial Bacteria Specifically formulated to reduce organic matter and bottom solids Breaks down settled organic materials Seeds filtering biological waterfalls and pressure filters to establish and maintain a colony of beneficial bacteria Increases oxygen levels; reduces toxic and harmful ammonia Supports pristine water quality Safe for fish and aquatic plants Sizes available: 8oz, 16oz, 32oz, 1 gallon