Generally, guppy does not need oxygen. Only when the culture density is too high or the water temperature is too high, it is necessary to oxygenate guppies. In summer, the weather is hot, and the oxygen consumption of guppies increases, so they need to be oxygenated. During the breeding period, if the guppy head is found to stick out of the water frequently, it means that it has started to lack oxygen, and it is necessary to oxygenate the guppy immediately. Generally, 50 guppies can be farmed in a 40L fish tank, and oxygen is needed if the breeding density exceeds this.

If natural light can meet the demand, it is generally not necessary to turn on the light. However, if natural light can't meet the demand, it is necessary to turn on the light instead of natural light. Guppies are tropical fish and have a need for light. They need four to six hours of natural light every day. If natural light can't be found, you can consider turning on the light to make up the light.

The growth of guppy can not be separated from illumination, so it is necessary to ensure sufficient illumination for guppy to grow healthily. When providing light, it is necessary to avoid strong light and let them receive astigmatism. There is less sun in winter, and the intensity of light is not strong. When conditions permit, it can provide all-day illumination.