Safe for fish and livestock, Outdoor Water Solutions Lake & Pond Bacteria is packaged in water-soluble pouches. This blend of aerobic bacteria helps to break down organic matter on the bottom of the pond, diminishing nutrient overload and helping to reduce odors to create a clean, clear, and healthy pond. Highly concentrated, this dry blend contains cellulose enzymes, hyper cellulose-producing bacteria, and bacteria designed to work in cold weather to accelerate the breakdown of leaves, sediment, and other accumulated dead organic waste. Outdoor Water Solutions Lake & Pond Bacteria dissolves within 5 minutes. Easy to apply Environmentally friendly Safe for fish and plants Breaks down dead algae Reduces most odors