There are thousands of strains of pond bacteria that can be used for many different purposes. Pond bacteria are divided into three different categories; each category has specific water temperature ranges that they perform best. Certain strains of pond bacteria will also perform differently depending on the amount of oxygen available in a pond.
Most products that contain pond bacteria fall within the mid range that will work best in water temperatures between 50°-115°F. Most mid range pond bacteria will still be actively working at temperatures as low as 34°F but on a much slower rate. If you are looking for a bacteria that performs in cooler water the packaging should market to that specific characteristic. Ideally, pond bacteria will perform best in warmer waters.
Another performance enhancer, in terms of pond bacteria, is aeration. Most pond bacteria live in aerobic or anaerobic environments. This means some strains require high levels of oxygen to survive and others can perform on much lower oxygen levels. Some pond bacteria are facultative, which means they can adapt and thrive in either environment. Sano's pond bacteria, Muck Doctor, are considered mid range bacteria and perform best in water temperatures between 50°-115°F.