How To Keep Duckweed Alive In 2023

Made a floating barrier to keep the duckweed under control! Works great
Made a floating barrier to keep the duckweed under control! Works great from

What is Duckweed?

Duckweed is a type of aquatic plant that is found in many parts of the world. It is a free-floating plant that lives on the surface of the water and can be found in both fresh water and salt water. Duckweed is a very small plant, usually no more than a few millimeters in length. It is often mistaken for algae but is actually a flowering plant. Duckweed is a great source of food for fish and other aquatic life, and is also used in water purification systems. It is an important part of aquatic ecosystems and is often used as a water filter in ponds, lakes, and other water sources.

What Does Duckweed Need To Survive?

Duckweed needs a few key things in order to survive. It needs light, oxygen, and nutrients in order to thrive and grow. When it comes to light, duckweed needs full sunlight or bright artificial light in order to photosynthesize and produce energy. Duckweed also needs oxygen, which it gets from the water it is living in. Finally, duckweed needs nutrients such as nitrogen and phosphorus in order to grow and thrive.

How to Keep Duckweed Alive in 2023

In order to keep duckweed alive in 2023, you will need to provide it with the right environment and care. Here are a few tips to help you keep your duckweed healthy and thriving:

1. Provide Adequate Lighting

Duckweed needs full sunlight or bright artificial light in order to survive. If you can’t provide your duckweed with full sunlight, then you will need to use an artificial light source. Make sure to position the light source in a way that it is evenly distributed throughout the tank.

2. Monitor Water Quality

It is important to monitor the water quality of your tank in order to keep your duckweed alive. You will need to test the pH level of your water, as well as the levels of nitrogen and phosphorus. The ideal pH level for duckweed is 6.5 to 7.5, and the optimal levels of nitrogen and phosphorus are 0.5 to 1.5 ppm.

3. Maintain Proper Water Temperature

Duckweed prefers warm temperatures of around 70 to 75 degrees Fahrenheit. Make sure to keep your tank at the right temperature and avoid sudden temperature changes, which can shock and kill your duckweed. You may need to use a heater to maintain the correct temperature.

4. Prune Regularly

Duckweed can easily become overgrown and will start to die off if it is not pruned regularly. Prune your duckweed at least once a week to keep it healthy and to prevent it from overcrowding your tank. It is also important to remove any dead or diseased duckweed from the tank to prevent it from contaminating the other plants.

5. Feed Duckweed

Duckweed needs a steady supply of nutrients in order to survive. It is important to feed your duckweed with a fertilizer specifically designed for aquatic plants. There are many types of fertilizers available, so make sure to read the label carefully and choose one that is right for your duckweed.


Duckweed is a wonderful addition to any aquarium or pond and can provide a great source of food and oxygen for your other aquatic life. By providing your duckweed with the right environment and care, you can keep it alive and thriving in 2023. Make sure to provide it with adequate lighting, monitor the water quality, maintain the proper temperature, prune regularly, and feed it with the right fertilizer. With the right care and attention, your duckweed will be sure to thrive for years to come.

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