White scale deposits 

• Symptoms: formation of white deposits on lamps, stairs and walls
• Cause: incorrect water balance. Hard water Condition.
• Recommendations: Adding sequestering and adjust the pH. Wipe vigorously in order to remove stains. If the pool is coated cloth PVC, this empty tank has a white color resistant to abrasion, in which case you can remove deposits using a wet acid muriatico towel.
  Attenzione i vapori di acido muriatico sono tossici e fortemente corrosivi. Usare mascherine e guanti in gomma per proteggere le mani.