The pools require seasonal maintenance, especially in conjunction with their reopening periods. It proves necessary to carry out a verification of correct operation to prepare the supply of any spare parts and chemicals for water treatment. Great attention must also be paid to the filtration system which guarantees the purity of the water and protects it from the accumulation of dirt. Correct water circulation is arranged thanks to the skimmers or the infinity edge, which create constant recirculation and disinfection. This is possible thanks to the use of chemicals placed in the water during its use.