Spa PH- (Minus Gel) 1L
1. Maintain proper daily levels:
Alkalinity: 100-150 ppm
2. If levels are higher, add 60 mL of SPA PH- per 1,000 L of spa water to decrease pH 0.4.
3. Spa must be in operation before SPA PH-.
4. Wait 15 minutes and retest pH.
5. Repeat operation until recommended levels are reached.