Causes and Control Methods of Moss Overgrowth in Aquaculture Ponds

Many friends engaged in aquaculture are no strangers to moss. The common types of moss found in aquaculture ponds mainly include Spirogyra, Cladophora, and Hydrodictyon. To draw the attention of aquaculture farmers to this problem, today the editor will analyze for you why moss overgrows? What harm does it bring to aquaculture? And provide some control suggestions!

I. Why moss overgrows

The main reason moss is produced in large quantities is that after the previous aquaculture work ended, the pond was not thoroughly cleaned, causing organic matter to accumulate at the bottom and the substrate to deteriorate. In addition, some farmers, in order to save on aquaculture costs, use fertilizers containing chicken manure to fertilize the water in the early stage, which is also the main reason for moss overgrowth in ponds.

II. The harm of moss overgrowth

Generally speaking, a small amount of moss appearing in the water during aquaculture is not much of a problem, but once the water environment becomes too suitable for moss growth, the overgrown moss will continuously absorb nutrients from the water during reproduction and growth, causing the water to become clear and lean. As a result, water transparency will increase, and when sunlight shines directly on the pond, it will cause stress to the aquaculture organisms in the pond, thereby affecting their growth.

III. Prevention and control of moss overgrowth

1. Salvage

When a large amount of moss appears in the aquaculture pond, the most direct method is to directly salvage part of the moss.

2. Use high-quality fertilizers

As just mentioned, one of the causes of moss overgrowth is that farmers use some inferior fertilizers to save costs, thus providing conditions for moss growth, so using high-quality fertilizers is very necessary.

3. Carry out sun exposure and cleaning

Thoroughly clean the pond and expose it to the sun. For aquaculture ponds, properly cleaning the bottom is very important, and this is also an important means of maintaining stable water quality.

4. Shading treatment

Using shading is very effective. After a large amount of moss dies, sodium humate can be dissolved in water and sprayed over the whole pond at about 2 kg per mu to oxidize the dead moss.

5. Fertilize the water and cultivate algae

Suitable algae species should be introduced according to the pond conditions at that time, and high-quality algae should be cultivated to inhibit the overgrown moss, while high-quality lactic acid and Bacillus should also be used to prepare the water.

Of course, when dealing with overgrown moss, the editor does not recommend using chemical agents such as sulfuric acid, because the harm to aquaculture organisms is very great, and it can easily cause poisoning of the aquaculture organisms. Especially after the temperature rises, under high-temperature conditions, if the amount of chemical agents is not controlled well, the toxicity will increase and cause the death of aquaculture organisms over a larger area. Therefore, the editor here suggests that you do not adopt overly aggressive methods; steady handling is the safe choice.