Instructions for use

• Carefully clean the swimming pool, use a "venturi brush" or a "vacuum brush".
• Partially drain the pool.
• Spill Acti Winter Pro in the pool, while the filtration system is operating, by the drain hole, the valve(s) (corresponding to the skimmer(s)) should be shut).
• Keep it on for 1 hour, while the filtration system is operating.
• Apply frost protection to the pool and pipes.
• To extend the action over winter, repeat the same process during the first few days of spring.