The water in the fish tank is turbid, which can be divided into three situations: chemical turbidity, physical turbidity, and biological turbidity. Different types of turbidity have different solutions.

　　Chemical turbidity: it refers to the turbidity of water quality caused by adding chemical reagents (mainly drugs), water purification agents, etc., such as Potassium permanganate. The color is purple, otherwise it will be pink. This kind of turbidity can be solved through activated carbon adsorption, so beginners should not casually prescribe medicine when raising fish, as it is not beneficial for water quality and fish.

　　Physical turbidity: refers to the floating of particles that everyone can see with the naked eye. In professional terms, it refers to the water turbidity caused by excessive particulate impurities in the cylinder, which is called physical turbidity. The color of the water is white, and granular things can be clearly seen. It is generally common in the early stage of cylinder opening, mainly due to the use of new filter materials, which shed a large amount of particulate impurities and short fibers, causing water turbidity. However, this turbidity is not terrifying, as long as fine cotton is added or the filter hole is reduced, it can be solved.

　　Biological turbidity: This is mainly caused by the proliferation of microorganisms, which generally manifests as the water in the fish tank being chaotic and giving people a hazy feeling. This is the most common turbidity, and the cause of such turbidity needs to be understood in order to find effective solutions.

　　The simplest way is to clean up the turbid water.

　　Pour the small fish tank directly. A large fish tank can be scooped out with a water spoon or piped out.

　　As the water level drops, wash the fish tank in a timely manner until it is clear and bottomed out.

　　It is not feasible to clean the turbid fish tank, pour out the dirty water, and inject new water.

　　Thoroughly clean the edges and corners of the fish tank to ensure that some difficult areas are also cleaned. Especially for water plants, they should be thoroughly cleaned, otherwise they can easily regenerate and the water will become turbid after a certain stage.

　　Use a cloth to clean areas that are not easily brushed.

　　After cleaning, let the Water purification be purified, so that the water will be as clear as ever.

　　Pay attention to frequent water changes.