A Closer Look At The Nature Of Pond Bacteria

Bacteria play a significant role in the life of a pond. Pond bacteria help in the breakdown of toxic ammonia into nitrates. They are microscopic organisms that live in all pond water. These organisms are single celled that feed on both organic and inorganic materials. They can reproduce quickly in about 10-20 minutes.

However, the bacterial activity does not only help in the natural cycle of a pond, but it also determines the quality of the ponds environment. The change in ponds colour, smell, and texture can tell whether the pond is healthy or not.


There are different groups of bacteria present in pond water, but two kinds are mostly known: the good (aerobic) bacteria and bad (anaerobic) bacteria.


The good bacteria (beneficial bacteria) manage organic waste from fish, excess food, and fertilizer from damaging the water quality. They compete with bad bacteria for food such as animal waste and decayed plants. Good bacteria are in the forms of sludge removers and nitrifiers. The sludge removers reduce the food source of bad bacteria; meanwhile, the nitrifiers convert harmful ammonia into nitrates.


The ponds environment normally gets out of balance: excessive amounts of food and unbalanced population of bacteria can bring problems when left untreated. The abundance of organic water in the pond affects the stomach of bacteria, resulting to the release of ammonia.

When the pond becomes overpopulated and filled with organic substances, the good pond bacteria will soon be incapable of digesting the waste of the pond. This kind of imbalance can induce the bad bacteria to release harmful Co2, methane, and ammonia, which are dreadful to the ponds aquatic life. As a reaction, the bad bacteria or anaerobic bacteria will start to produce unwanted odours and colour in the pond.


One sign of bad bacteria infestation in the ponds water is the formation of unwanted algae. Algae plague the pond water, making it dangerous for both human and animals. Once consumed, these algae can cause death and serious infections.

No one can speculate the time the water will get out of balance. However, proper cleaning and timely waste removal can prevent the bad bacteria from staying on your precious pond. A pond owner should oversee the changes in the pond and stay away from materials or substances that fall off in the pond. Using filters can prevent dead leaves, waste, and other unwanted substances off the pristine pond water. Keep in mind that too much fish and organic materials in the pond can cause rapid imbalance and it can contribute to bacterial growth. Moreover, sufficient oxygen distribution in the water can improve the good bacterias growth. Using fountains or aerators can help boost the release of oxygen in the pond. It is also advisable for pond owners to drop off beneficial bacteria in the pond on a regular or weekly basis. The regular or weekly dosing will supply enough bacteria that can digest the nutrients in the pond. However, dont apply bacteria treatment together with a pesticide or herbicide. Pesticides and herbicides kill the bacteria that are beneficial to the pond.