Cause:
PH too low or too high. Ineffective chlorine

Solution:

1. Check and adjust pH
2. Superchlorinate
3. Vacuum and filter next day

Cause:
Low pH. Water unstabilised

Solution:

1. Adjust pH and alkalinity
2. Test pool stabiliser levels

Cause:
High pH, poor filtration, heavy use of pool

Solution:

1. Check and adjust pH
2. Check filter, clean or backwash as necessary
3. Vacuum and filter next day

Cause:
Algae Present

Solution:

1. Check and adjust pH
2. Brush the pool with broom
3. Superchlorinate
4. Add algaecide as recommended by Professional.

Cause:
Low pH, chloramines present, chlorine levels too low

Solution:

1. Check and adjust pH
2. Superchlorinate
3. Maintain correct pH and total alkalinity levels
4. Maintain correct free available chlorine levels