Water (ponds, streams) gets periodically, generally once a year, during the big dry season.
The term "periodic waters" designates a type of aquarophilia system which imitates the natural conditions of a tropical aquatic environment. These systems are based on the concept of the dynamics of natural ecosystems, where water parameters (such as temperature, hardness, nutrient concentration, etc.) vary cyclically rather than remaining constant.
In a periodic water system, the owner of the aquarium strives to reproduce these cyclical variations using equipment such as thermostats, filtration and automatic filling systems, and programmable lights.
The purpose of these periodic variations is to simulate the conditions to which the fish and other inhabitants of the aquarium are used, which often come from tropical environments where the parameters of the water vary naturally over the seasons. By maintaining these variations in a controlled way, the owner of the aquarium can create a more natural environment for his fish and promote their well-being.
It is important to note that periodic water systems require more important attention and maintenance than more traditional aquarophilia systems, as the water parameters must be monitored closely and ensure that they follow the desired cycle. However, for those who are ready to spend time and efforts to their aquarium, periodic waters can offer a very gratifying and natural fish maintenance experience.
In addition to simulating seasonal variations in water, periodic water systems can also include cycles of days and nights to imitate the natural rhythm of solar light. This can be done using programmable lights that come on and automatically go out at specific hours every day.
In conclusion, periodic waters are a type of aquarophilia system which aims to reproduce natural variations of water in a tropical aquatic environment. These systems require more maintenance than more traditional aquarophilia systems, but can offer a very gratifying and natural fish maintenance experience for those who are ready to devote time and efforts.