What Is the Best Medicine for Disinfecting Fish Ponds: A Detailed Guide to Disinfecting Fish Ponds with Potassium Permanganate

Fish farming is a very common aquaculture project in China. When raising fish, in order to prevent pests, disease-causing bacteria, insects and various harmful substances from affecting the growth of the fish, we need to disinfect the fish pond regularly. Disinfecting the fish pond is very important for the growth of the fish. However, many people still do not know how to disinfect a fish pond. Below, the editor has brought you several methods for disinfecting fish ponds. Let's take a look!

1. Bleaching powder

The chlorine content of bleaching powder is relatively high. If bleaching powder is sprinkled into water, it will react chemically with the water to produce substances such as hypochlorous acid. These chemical substances then release ecological oxygen, and their sterilizing effect is very obvious. We should control the amount of bleaching powder properly according to the pond area, and sprinkle it evenly over the whole pond. When bleaching powder is not in use, it must be kept sealed, because it decomposes very easily when exposed to air. Bleaching powder also poses certain harm to the human body, so when sprinkling bleaching powder, protective measures should be taken.

2. Quicklime

When quicklime meets water, it produces a highly alkaline substance and releases a large amount of heat, and its sterilizing ability is very strong. However, if quicklime is used for sterilization, it is best that there are no fish in the fish pond, otherwise it will also cause great harm to the fish. Therefore, we generally use quicklime for disinfection two weeks before stocking fry, and during disinfection we control the pond water level at about 8 cm. Then dig several small pits around the pond, put the quicklime into them and let it react. After heat is produced, use a shovel to spread it evenly over the whole pond. While sterilizing, quicklime can also improve the fertility of the soil and water quality, increase mineral elements, and has a certain fertilizing effect.

Quicklime is better for disinfecting fish ponds. When using quicklime for disinfection, before disinfection with quicklime, medicines such as mixed-fish clearing agent or pond-clearing agent should be added to assist in killing insects and fish, so as to facilitate the release of young fish.Potassium permanganateThe dosage is not easy to master. Theoretically, usingpotassium permanganateis feasible, but it is expensive and not worth the cost, while quicklime has a good disinfection effect and can killprotozoa, trash fish and snails, and its efficacy is stronger thanpotassium permanganate.

  Quicklime disinfection has the following points:
  1. It can eliminate many kinds of pathogenic bacteria and harmful organisms.

  2. It improvesthe water environment。

  3. It is beneficial to fish growth.

  The specific method of quicklime disinfection: after the pond is repaired, disinfect on a sunny day about two weeks before releasing fish. Leave 5-10 cm of accumulated water in the pond, dig several small pits around the bottom of the pond, use 60-75 kg of quicklime per mu, and after slaking it into slurry, sprinkle it over the whole pond. The amount can be increased or decreased according to the amount of bottom mud in the pond. Stirring the water body after application gives a better effect, and no dead corners around the edges should be left during disinfection. The efficacy of quicklime disappears in about 7-10 days.

  The quicklime used for fish pond disinfection refers to unslaked lime pipes (or lime lumps). Slaked lime powder is occasionally used to supplement calcium or adjust water quality, but it is generally not used. For different uses, the amount of lime pipes also differs. When clearing a pond, that is, with less than one chi of water, use about 150 kg per mu; when used with fish present, only about 50 kg is needed.

3. Tea seed cake disinfection

Tea seed cake refers to the residue left after oil-tea camellia seeds are pressed for oil. This residue contains tea saponin, and tea saponin contains certain toxins. It can dissolve the red blood cells of fish, so it is very effective for controlling some trash fish. Tea saponin can also dissolve in alkaline water, so its effect is even more obvious when used together with quicklime. Tea seed cake disinfection is generally carried out on sunny days in winter, preferably when trash fish are gasping at the surface, and it is sprinkled into the pond. This can both improve the disinfection effect and reduce costs. Tea seed cake can also improve water quality and provide certain feed for fish.

4. Precautions

When using bleaching powder for disinfection, we must pay attention to controlling the dosage. If it is too low, the effect will not be obvious, but if it is too high, it will cause great harm to the growth of fish. Therefore, when using bleaching powder for disinfection, we should first calculate the water quality, volume and fish growth conditions of the fish pond. Then reasonably control the timing according to factors such as weather changes to maximize the efficacy. Usually the best time to apply the medicine is around noon on a sunny day, and it is not suitable to apply medicine in cloudy and rainy weather or when the temperature is relatively low.

The above is a brief introduction to fish pond disinfection methods and precautions. Fish pond disinfection is very important for fish growth. If disinfection is not carried out in time or is done improperly, at best it will reduce the growth rate of fish, and at worst it will cause massive fish deaths, seriously affecting farming benefits. That is all for today's introduction. This article is for reference only. Thank you for reading and supporting us.

Method for disinfecting fish ponds with potassium permanganate

Recommended disinfection methods:
1. Concentration: 1/100,000 to 1/5000, that is, a concentration of one part per hundred thousand to one part per five thousand; due to differences among regions, manufacturers and production dates, this creates a huge problem in that the value cannot be fixed, so it needs to be adjusted together with the method of observing visibility and color, as detailed below.
2. The disinfection method for fish tanks, filter equipment, grass, sand, stones and other equipment is soaking and scrubbing for 30 minutes (this method is a commonly used disinfection method in hospitals);
3. The disinfection method for fish is a medicated bath for 10 to 15 minutes, during which sufficient oxygen must be ensured, preferably with an air pump supplying air; during the medicated bath, if any fish shows an adverse reaction, the water should be changed immediately or the fish should be moved into another container, with sufficient oxygen supplied; for people raising fish with well water, it is not suitable to use potassium permanganate to disinfect the fish. This concentration can eliminate most pathogenic bacteria. You can also use a concentration of 15 parts per million or 20 parts per million and soak for 2 hours, which can basically achieve comprehensive disinfection.
4. During disinfection, it is recommended to disinfect fish, grass and equipment separately.
5. It must never be mixed with well water or groundwater or other water containing divalent iron.