Bacteria | Everything you need to know about bacteria and the importance of bacteria in the pond
Single-celled microorganisms known as pond bacteria act as a natural filtration system in the water. These bacteria play a crucial role in the biological balance of the pond. They are able to break down pollutants such as ammonium and nitrite and convert them into substances harmless to nature.
All about pond bacteria
- What are bacteria?
- What are pond bacteria?
- What groups of bacteria are there?
- What is the point of bacteria?
- Why are bacteria in a pond important?
- What is the cause of algae formation in the pond?
- How do you know when pond water is healthy?
5 important tips for an organically clear pond
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What are bacteria?
Bacteria are microorganisms composed of a single cell and belong to the domain of prokaryotes. They are found throughout the earth and are involved in numerous biological processes, including breaking down organic matter, producing oxygen and aiding in the digestion of animals. Some bacteria are also pathogenic and can cause disease in humans and animals. Bacteria have different forms, ranging from spherical (coccus) to rod-shaped (bacillus) to spiral-shaped (spirillum). They can multiply by binary division, in which one cell splits in two to form two identical daughter cells.
What are pond bacteria?
Pond bacteria are microscopic organisms that function as a natural filtration system in ponds of all kinds. They are able to convert pollutants, such as ammonium and nitrite, into non-harmful substances for the environment. An effective way to make and keep a pond clean and clear is to use Bacta Clear. This is a special blend of bacteria and enzymes developed by pond specialist Simon van der Velde that helps break down organic waste, also known as sludge, that accumulates at the bottom of the pond due to excess fish food, trash, decaying leaves and algae such as filamentous and floating algae. The product is safe for humans, pond fish, pond animals and aquatic plants and is recommended at a dosage of 1 liter per 1,000 to 20,000 liters of pond water. Using the right blend of bacteria helps remove debris and helps maintain clean and clear pond water.
What groups of bacteria are there?
There are several ways to classify bacteria, but one of the most common ways is based on their shape, staining and biochemical properties. On this basis, bacteria can be divided into the following groups:
Cocci
These bacteria have a spherical shape and are also called spherical bacteria. Examples include Streptococcus and Staphylococcus.
Bacilli
These bacteria have a rod-like shape and can be elongated or short. Examples include Escherichia coli and Bacillus subtilis.
Spirilla
These bacteria have a spiral shape and often have flagella (whip tails) to propel themselves. Examples include Treponema pallidum and Vibrio cholerae.
Gram-positive bacteria
These bacteria have a thick cell wall and turn purple in the Gram staining test. Examples include Streptococcus pyogenes and Staphylococcus aureus.
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Gram-negative bacteria
These bacteria have a thin cell wall and stain pink in the Gram staining test. Examples include Escherichia coli and Klebsiella pneumoniae.
Cyanobacteria
These bacteria are photosynthetic and produce oxygen. They are often called blue-green algae. Examples are Nostoc and Anabaena.
Spirochetes
This is a group of spiral bacteria that can move through flagella and are often implicated in diseases. Examples include Borrelia burgdorferi and Treponema pallidum.
Actinomycetes
These bacteria have a fungal growth habit and often produce antibiotics. Examples include Streptomyces and Nocardia.
Why are bacteria important in the pond?
Pond bacteria are of great importance in a pond because they play an important role in the natural balance of the pond's ecosystem. These bacteria are able to break down and process organic waste, resulting in a reduced buildup of harmful substances such as ammonia and nitrite, which can be toxic to fish and other organisms in the pond. In addition, these bacteria help convert unusable pond nutrients into nutrients that pond plants can use to grow, leading to increased garden biodiversity and clearer water. Using products such as BactaClear, which contain a blend of beneficial bacteria and enzymes, can stimulate these processes and help maintain optimal water quality in the pond. In addition, a balanced pond ecosystem can also help prevent unwanted problems such as algae blooms, which in turn improves water quality and fish habitat.
What is the point of bacteria?
Bacteria are of great importance to life on Earth because they are involved in numerous biological processes. They are able to break down and recycle organic matter, which leads to nutrients for other organisms and makes soil fertile. Bacteria also play an important role in producing oxygen in the atmosphere and in maintaining a balanced ecosystem in bodies of water, such as ponds. In addition, some bacteria are useful in the production of food and medicines, such as sauerkraut and antibiotics. In short, bacteria are vital to maintaining life and the functioning of the natural world.
What is the cause of algae formation in the pond?
Algae, including blue-green algae, are a normal part of a pond's ecosystem and can multiply under favorable conditions, such as warm temperatures and excessive amounts of nutrients in the water. Too few aquatic plant species in the pond can lead to algae formation. A water lily is ideal against algae because its large bolls block sunlight, preventing water from warming up and giving algae less of a chance. Oxygenated plants and marsh plants are also important in preventing algae because they provide the water with oxygen and filter waste products so that algae have less chance to multiply.
How do you know if your pond is healthy?
A healthy pond has a pH between 6.5 and 8.5, a water hardness between 6 and 12 dH and a nitrate level below 20 milligrams per liter. But did you know that measuring water values such as GH and KH is not necessary if your pond is set up correctly. A healthy pond can be recognized by aquatic plants that grow well and pond water that looks clear. Want to know how to create a healthy pond environment? Then read the pond planting plan where this is explained clearly and step by step.
Frequently asked questions about bacteria
Some bacteria can get into our illness, such as from outside or from insufficiently cooking a piece of meat such as chicken. Bacteria that people can get food poisoning from are: Salmonella, E. coli O157 and Campylobacter.
Good bacteria are bacteria that we humans need to live. These bacteria actually protect us from the harmful bacteria. Examples of good bacteria are: lactobacilli and bifidobacteria.

Simon van der Velde
Pond specialist and aquatic plant grower since 1986
Simon's vision is to let nature do its work in your pond. No need to buy all kinds of measuring equipment and water improvers. If the fish are swimming nicely and the plants are growing well, then the water in the pond is of good quality. With a good planting plan and the right approach, you can save a lot of money and maintenance, and ensure a clear, biologically balanced pond that becomes more beautiful every year.