guppies like to live in still water, and it is most suitable not to make water flow for them when raising artificially. Because guppies are small tropical fish, they like to live in a relatively static environment. Moreover, wild guppies live in waters with small water flow. Therefore, it is best to breed guppy artificially without making water flow.

In addition, the biggest effect of water flow is to increase the dissolved oxygen in water, but guppies are hypoxic fish, and they don't need much oxygen, so water flow doesn't help them grow much. On the contrary, if there is water flow in the fish tank, it may affect their normal rest. The current is too large, which may cause them to be unable to keep balance.

The best water quality for guppies is weakly alkaline, and they live in tropical rivers such as Venezuela, Guyana and Brazil. Most of the water of their origin is weakly alkaline, so the water suitable for their growth is also weakly alkaline. When rearing artificially, it is best to keep the PH value between 7.2 and 7.4.

Although the most suitable water quality for guppies is weakly alkaline, their adaptability is relatively strong. It can grow in weak acid, weak base and neutral water. As long as the PH value is kept between 6.5 and 7.5, they can grow normally. Breeders should keep the water quality stable and clean at ordinary times, so that guppies will not be affected.