Causes and Solutions for Green Water in Ponds Green water in ponds is a common issue that many pond owners face. The green color is usually caused by an overgrowth of algae, which thrives in the presence of sunlight and nutrients in the water. Here are s

Causes of Water Turning Green

In order to find a solution, it is necessary to determine the exact reason leading to this phenomenon. Specifically as follows:

Pale Green Water

The main reason for pond water turning pale green is the strong growth of green algae. This type of algae is basically not harmful to the water source and the aquatic animals in it such as fish, shrimp, etc. In fact, this is considered good water color.

If the pond water is pale green, there is no need to treat it. You just need to maintain this condition throughout the aquaculture process.

Dark Green Water

If the water in the pond turns dark green, it is mainly due to blue-green algae and partly due to moss. Blue-green algae grow rapidly and are harmful to the aquatic animals in the pond. Because when blue-green algae bloom, it will cause the pond water to be severely lacking in oxygen. As a result, it causes diseases for fish and shrimp. Therefore, it is necessary to quickly determine the cause in order to come up with a solution to return the pond water to a pale green color.

Ways to Treat Green Water

Biological Treatment Method

This is a simple, effective, and easy-to-apply treatment method. The mechanism is as follows: Use biological products containing Bacillus, Nitrobacter, or Lactobacillus. These microorganisms can treat blue-green algae.

These biological products are commonly available on the market, so you can easily find them in stores or on websites, e-commerce platforms.

Biological products contain many bacterial cells. When introduced into the pond, they will multiply vigorously and compete with the living environment and food of blue-green algae. Over time, this type of algae will become weak, reducing in numbers. As a result, it helps restore the pale green color in the pond.

In addition to biological products, you can also use grass carp, tilapia, or catfish. These are all fish species with the ability to effectively control blue-green algae. Because they will consume all the blue-green algae in the tank.

Physical Treatment Method

One of the reasons for the strong growth of blue-green algae is the excessive use of fertilizer by humans, leading to the growth of blue-green algae.

Therefore, to deal with this phenomenon, the following method should be applied:

• Stop fertilizing the pond
• Remove all patches of blue-green algae from the pond.
• If the pond is small, you can drain about 25% of the water in the pond and then pump in fresh water.

This action does not disturb the living environment of fish and shrimp but can reduce the nutrient concentration in the pond and effectively eliminate blue-green algae.

In addition, it is necessary to install and operate an aeration system or use fans, oxygen tablets to provide dissolved oxygen to the pond water.

Chemical Treatment Method

In addition to the above two methods, you can also use algae-killing chemicals such as Chlorine, CuSO4, or Copper Sulfate...

These substances are effective in killing blue-green algae in the pond. Although they can kill harmful algae, they also eliminate beneficial algae. Therefore, it may disrupt the balance of the aquaculture environment.

Therefore, careful consideration is needed before application.

Note: The choice of method to treat green water depends on the origin and specific nature of the water. In some cases, it may be necessary to combine methods or consult with experts in water treatment for support.

Above are the ways to treat green water. Hopefully, it has helped you understand and choose the most suitable method. Contact us for advice on the best solutions for managing the water quality of aquaculture ponds.