Yes, you can use pool pH increaser in your spa since both use sodium carbonate (soda ash) as the active ingredient. However, you'll need to adjust dosing for your spa's smaller volume and retest after 30 minutes.
To raise pool pH, add sodium carbonate (soda ash) for quick increases or sodium bicarbonate (baking soda) for gradual increases. Test first, calculate dosage based on pool size, and add chemicals slowly with circulation running.
To increase pool pH, add soda ash (sodium carbonate) at 6 oz per 10,000 gallons to raise pH by 0.2 units, or use borax for gentler adjustment. Always test first, add chemicals to deep end with pump running, and retest after 4-6 hours.
To raise pool pH, add soda ash (sodium carbonate) at 1.5 lbs per 10,000 gallons to increase pH by 0.2 units. Test pH first, add chemicals with pump running, wait 4 hours, then retest and adjust as needed.
To increase pool pH, add sodium carbonate (soda ash) for quick pH increases or sodium bicarbonate (baking soda) for gradual increases. Test first, calculate dosage based on pool size, and retest after 4-6 hours.
