How to Clean a Pond Without Draining It | A Step By Step Guide


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This article’s primary objective is to educate us on how to clean a pond without draining it, cleaning the bottom of a pond, and other important topics discussed in the article.

How to Clean a Pond without draining it

This sudden rise in temperatures is always a delicate moment to manage. The microalgae present in the pond water (not always visible) take advantage of the high organic matter content to proliferate and invade everything. They grow faster than aquatic plants that are supposed to limit the amount of light. The pond water suddenly turns green. Here are some tips for cleaning your pond without draining it:


  • Leave the pump and filtration running for a few hours a day, preferably in the morning to aerate the water in your pond. Regularly clean the dirty filter.
  • Get into the habit of picking up dead leaves and plant waste, not only when the pond is overwintered and at the end of winter, but also throughout the bad season.
  • From February-March, multiply the passages of a tight-mesh landing net to collect as many algae as possible.
  • Add a circular ceramic air diffuser to your pond. It will produce many small air bubbles, ensuring better oxygenation of the water.
  • Over time, a lot of dust, soil, decaying organic plant matter, and even fish droppings accumulate at the bottom of the pond floor. They form a thick layer of mud. It is not a question of completely removing it because it serves as a shelter, place of life, or reproduction for many fish and living organisms. Rather, it is a question of limiting its expansion by removing a third of its thickness each year, which gently combats pollution risks. You can rent a pond vacuum for 1 or 2 hours, which will greatly facilitate cleaning.
  • Check with test strips or have the water pH checked. If necessary, bring it back to a value close to neutrality (pH 7) by dosing just the right product amount. Take advice from a pool specialist: he will direct you to the right product and tell you how much to diffuse in the water.
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How to Clean Pond Water

When we think about how to make a larger pond, we always think about the sunny months. Something that is a mistake, since neglecting it the rest of the year can have serious consequences. If we are not rigorous with the pond’s maintenance in winter, it is likely that with the arrival of spring we will have to start it from scratch—something not very pleasant, especially for the plants or fish that inhabit it.

But let’s not go that far. Let’s think about how to avoid getting there. And that, beyond winter tasks, involves knowing how to keep the water in a pond clean. A task that does not understand the times of the year is vital for their well-being. And since prevention is better than cure, let’s see what tasks we have to carry out regularly to keep our water in perfect balance.

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Check the pump, essential to keep the water in a pond clean

We tend to believe that having a pump is a guarantee of clean water. But make no mistake. The filter and pond pumps are still devices that, for different reasons, can stop working properly. And the range of reasons is wide. From not having collected the leaves that fall in the water to an upstart stone that stops its operation. As much as these systems give us confidence, it is essential to be aware of them.

It is important to understand the role the pump plays in keeping pond water clean. It is thanks, the water on the surface moves. This movement that facilitates oxygenation and, simultaneously, prevents the proliferation of substances on the surface. To guarantee its use, the ideal is to carry out a weekly cleaning of its components. Sometimes it is enough to remove the filter to wash it thoroughly and replace it. Be very careful: do not use soaps. The ideal is to wash it with water under pressure, or with the power that our hose can offer us. The use of any natural bacteria can alter the pH of our pond.

Check the water values

An aspect that any aquarium lover knows thoroughly and that often goes unnoticed in the pond water. As its name suggests, a pond is still stagnant water. Making it contain life does not happen, only, to avoid rottenness. It also forces, if you have fish or plants, to maintain certain levels in the water. 

Keeping pond water clean inevitably involves maintaining its ph. something that we can measure regularly, and that is easily altered. Without going any further, Rainwater can change its parameters, making it a task to perform regularly. And, if any alteration is detected, solve it with pond treatments.

Choose oxygenating plants, the key to keeping the pond water clean

Plants are true allies to have water in perfect balance. A compelling reason to include oxygenating pond plants in our pond. The role of these plants is fundamental. They can absorb decomposing minerals. It is a unique and natural help in cleaning the pond. If you have considered how to plant pond plants, surely the water lily has come to your mind. Let yourself be carried away by your instinct: it is one of the most beautiful oxygenating plants that exist. And while your choice is for aesthetic reasons, its value for water balance is unique.

Keep algae growth at bay

Algae are one of the biggest indicators of the health of a pond. Algae growth is one of the biggest enemies in keeping the water in a pond clean. They make their appearance mainly in the hot months when we have neglected our small ecosystem for too long or respond to our pond’s poor location. Hence, we must always install it in the shade. Far from postponing eliminating them, it is essential to stop them from the beginning. Only in this way will we prevent them from colonizing the water, complicating the fish and plants that inhabit it. And stopping them inevitably happens by using anti-algae for ponds.

Feed the fish just right

It is important as knowing how to choose pond fish correctly is feeding them without excess and not just because this negatively affects your health, which it does. Also, because the food they do not eat can be harmful to our water’s balance. It is still decomposing garbage.

Cleaning silt from the bottom of a pond

Leaves, plant residues, and other natural bacteria decay substances accumulate on the pond floor over time and are broken down with special beneficial bacteria. If too large amounts are deposited, a low-oxygen silt layer (sludge) is formed. This disrupts the nutrient balance considerably. Also, toxic fermentation gases develop and create an unfavorable environment for plants and animals. You should now remove excess silt mechanically at the latest.

How to Clean the Pond Bottom

Vacuum up the mud

A simple and quick method is to remove the silt from the pond’s bottom with a special electric vacuum cleaner. Small creatures that are important for the ecological balance of the water body may also be sucked out.

Tip: Use caution when removing mud from the bottom of a water body not inadvertently to harm animals living close to the ground. When vacuuming, never remove all of the silt; always leave a thin layer on the bottom.

How to Clean a Pond Without Draining It

Biodegrade sludge

By regularly adding special bacterial culture preparations, a high layer of silt can be biodegraded over time. Bacteria support the biological decomposition process that organic substances are subject to after they die. Get advice on the procurement and use of cultures in your OBI store.

Tip: Note that every change in the nutrient structure or substance balance affects the entire ecosystem in the pond; especially on the food chains. The introduction of special preparations should, therefore, only be an exceptional solution. In the long term, it is important to prevent the excessive accumulation of organic material on the water bed, e.g. B. by a leaf safety net.

Clean the pond

If the water balance is already permanently affected by the mud, thorough pond cleaning, the hibernation period may be inevitable. To do this, you have to drain the water and temporarily move plants and animals into containers with sufficient residual pond water. The mud can then be removed with a shovel, and the bank areas can be cleaned with a broom. Then new water with little lime is poured in, and the animals and plants are used again.

Tip: Ensure that the newly filled water is in the hardness range between 3 ° DH and 10 ° do. This helps to keep the acidity of the water stable. A special titration solution such as that used for aquariums is suitable for easy determination of the water hardness (in pet shops).

how to clean a pond for swimming

Remove sludge

The best way to prevent silt from forming in the first place is to take preventive measures. A leaf safety networks well in autumn because it prevents fallen leaves from being blown into the pond. When it is cutting back excessively lush vegetation or plant residues and removing the clippings also helps ensure that less dead organic matter is carried into the pond. It is also useful to limit fish stocks and use solar or electric pumps to ensure sufficient water circulation.

Tip: A surface suction device (skimmer) floating on the water’s surface catches organic substances such as remains of flowers, fruits, and leaves and reliably filters them out before they sink to the bottom of the pond.

How to Clean a Pond without draining it: FAQ

How do you get the dirt out of a pond?

To clean this type of dirt, you must fish out the filamentous algae, treat the water with barley straw or hydrogen peroxide, maintain it by aeration and remove the plant debris by extracting the water. Using water or using a pond vacuum.

How can I have crystal clear pond water?

You can make pond water crystal following these steps:

  • Check the pump, essential to keep the water in a pond clean.
  • Control the water values. 
  • Choose oxygenating plants key to keep the clean water of the pond. 
  • Keep algae at bay
  • Remove algae growth regularly
  • Keep the nutrient content in the pond as low as possible
  • Filter the water sufficiently and keep it moving
  • pay attention to the water quality
  • Protect the pond from negative external influences
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How do I clean the bottom of my pond?

Clean the basin’s walls with a water jet and a non-abrasive brush; Check the condition of pumps, filters, and other submerged accessories and take the opportunity to clean them; Replant aquatic plants; Let the water sit for a week to two weeks before reintroducing the fish.

Last Words

We believe you enjoyed reading this article and have been enlightened and understood how to clean a pond without draining it.

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