Zodiac Pool Systems Nature2 Guide Du Propriétaire page 10

Treatment
1. Backwash and clean filter.
2. Run filter for 24 hours.
3. Increase run time per day.
Superchlorinate water with a Health Canada approved source of
sodium dichlor according to the manufacturer's instructions.
Balance the spa water.
1. Check pH and adjust if necessary.
2. Superchlorinate water with a Health Canada approved source of
sodium dichlor according to the manufacturer's instructions.
3. Repeat steps 1 and 2 until algae is gone.
1. Adjust pH and total alkalinity to ideal ranges.
2. Vigorously brush stained areas.
3. Add sequestrant.
4. Run filter.
5. Twelve hours later, superchlorinate the spa.
6. Test and balance water.
7. Test spa water for dissolved metals.
Clean with soft cloth and mild detergent.
Test water for minerals; use a sequestrant;
maintain water balance.
Adjust pH and total alkalinity to ideal ranges.
1. Replace a volume of spa water with water low in hardness
and dissolved solids.
2. Use sequestrant to prevent scale buildup if high hardness
is a continuing problem.
3. If remedial action has been taken, and problem still persists,
drain and refill spa.
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