Dannywoo Garden is reader-supported. We may earn a commission through products purchased using links on this page. Learn more about our process here

How to Keep A Pond Clean without Filter

Keeping a pond clean without a filter increases manual work for any pond owner. Everyone is not able to effort the filter system in their pond. The filtration system is more expensive as well as time-effective than manual filtration. 

 Because the heavy materials remain under the surface and make them rotten earlier if you don’t have any filter in the pond. There may be aquatic plants for beautification that discharge some filthy materials into the water. Fish can discharge poop on water which makes water dirty faster. 

But as it is expensive, there are natural ways to keep the water clean in a small pond.

Without a filtration system, can it be cleaned enough following natural ways?

Yes, it is possible to clean in natural ways or without using a filter. Let’s see how you can keep a pond clean without a filter step by step.

1. Avoid Overstocking

If you have a small pond then make sure you are not putting so many aquatic plants or fish in your pond. Excessive amounts of anything can be a reason to be polluted. Just keep the amount compatible with your pond’s size. The more fish or plants you keep the more wastage there will be in your pond. You will have to put in more food for the fish and the fish will exhale more ammonia into water. Since you are not using any filters you will have to keep this in mind.

2. Frequent  Water Change

For a small pond, you will need to change the water regularly. As you will not have any filter so you will need to clean it manually. Discharges from fish will create a bad odor in the water. For this, you can dechlorinate your pond’s water. You can effectively dechlorinate tap water using charcoal or carbonate

3.  Appropriate Pond Filter Plants

Aquatic plants are essential for water. Because they work as a natural pond filter. Sunlights can increase algae growth. Some small water hyacinths prevent sunlight from getting in contact with algae and stop their growth. Pond filter plants will increase oxygen. Some examples of pond filter plants are- water Irish, taro root, water lettuce, hornwort, etc.

A good mixture of floating, emergent, and submerged oxygenated plants is best for a Garden pond. They keep a balance between the oxygen and the fish.

4.  Pond Aeration 

Pond aeration can play a vital role for pond water and fish to supply oxygen. Besides this, this will help you to keep your pond clean and clear.

Also, this will help to increase the level of beneficial bacteria in your pond. 

Beneficial bacteria help in improving the oxygen level and will reduce the muck from water. Mosquitoes breeding will be reduced through this bacteria.

5. Muck Removal sterilizer

Muck will decrease your surface movement which will help in more algae growth in your pond. The sunk debris will not be an issue.

But too much sludge (sunk debris) may affect Oxygen levels. This will also help algae grow more compared to other conditions. Alongside debris, there could be dry leaves in the pond water.

6. Pond Dye

Don’t worry, pond dye will not color your pond surface. But this will help in preventing algae growth in your water. This will reduce the UV light penetration. But in this case, you need to be more cautious. Because you have to apply pond dye in very early spring. During this time algae and weeds grow faster than at any time.

7. Pond Netting

When you are too conscious of debris, you will need to place a pond net. A pond net will catch all the algae or debris and reduce the sludge problems in the water surface. A pond skimmer net will help you to collect all the leaves or specks of dirt floating in the water.

8. Barley Straw

To prevent algae from water levels, barley straws are a very preventive measure. This avoids planktonic algae from growing which is the most accurate cause of pond pollution. Being an environment-friendly thing, it is going to make your pond clear not to be toxic to your plants and fish.

Barley straws will keep your water clean. For 90 gallons of water, you can add 1/2 cup of Hydrogen peroxide(H2O2) to water with barley straws. You have to know about the measurement of your pond’s water and then apply it according to the amount.


  • Use a skimmer net daily to avoid dry leaves.
  • Use a pump to exchange water.
  • Get help from pond filter installation agencies.

Final Verdicts

For a small pond, you can easily clean up the dirt from your water. But for a large pond, you do need to install a pond filter. It may be costly but manually cleaning up will be dramatic for you. Because a large fish and plant population will discharge more wastage than a small pond. You have to change the water continuously. Hoping the ways will be helpful for your small pond.


Question 1: Does a garden pond need a filter? 

Answer: It differs considering the population of fish in your pond.

Question 2: When should I clean my pond? 

Answers:  Specifically, you can clean your pond in spring. But you have to be aware of the volume of wastage and temperature.

Question 3: Will it be so hard to clean manually? 

Answer: No. But you need to clean frequently. If you don’t clean frequently then it might be heavier for you to clean all the sludges from water.

Question 4: Can I use nano media reactors?

Answer: Yes, you can. Nano media reactors work as a backup filter for small ponds.

Question 5: Which sterilizer should I use for a small pond?

Answer:  You can use a UV sterilizer which will be effective for a small pond

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top