Shape
Chlorine product
Choose the active ingredient content stated by the manufacturer on the packaging.
Water volume
27m³
27Your pool holds 27 m³ – that is 27,000 litres. For maintenance, dose about 39 g (Chlorine with 70% active ingredient); for shock chlorination 195 g.
Volume = surface area × depth. Chlorine: 1 mg/l equals 1 g per m³ of water, divided by the active ingredient content; for shock chlorination we assume five times the amount (assumption, not a standard).
What you can do
Keep free chlorine at
Assumption: 0.5–2 mg/l (ppm) for private pools. There is no standard for private pools; DIN 19643 only applies to public pools. Follow the instructions on your chlorine product.
Check the pH
Assumption: 7–7.4 (ideal 7.2) – common practice for effective chlorine, not a standard for private pools.
Evaporation: approx. 54–126 litres per day
Assumption: in summer about 3–7 mm of water level evaporates per day, depending on sun, wind and cover – top up regularly.