1. Chemical fertilizers are fertilizers made using chemical methods, which have fast and efficient fertilizer

 efficiency characteristics, such as compound fertilizers, urea, etc. They can quickly provide the necessary

 nutrients for aquatic animals and plants, but excessive use may cause pollution to the water environmen

t and damage the aquatic ecological environment. Therefore, when using chemical fertilizers, attention m

ust be paid to controlling the amount and frequency of fertilization to avoid negative impacts on water q

uality.

2. Biofertilizer is a fertilizer made by fermenting microorganisms, mainly composed of microbial agents, a

mino acids, etc. This fertilizer has the advantages of being green and pollution-free, while also enhancing 

the physical fitness of aquatic animals, which is beneficial for the health of aquaculture animals. However, 

the production and use of biological fertilizers require high technical requirements and relatively high costs.

Overall, the choice of fertilizer depends on the specific breeding environment, crop demand, and cost cons

iderations., Regardless of the type of fertilizer used, it is necessary to follow the principles of scientific ferti

lization, control the amount of fertilization, and avoid excessive fertilization causing water pollution and dis

eases. In addition, regular testing of water quality is also crucial to ensure that the use of fertilizers does 

not have a negative impact on water quality.