Sodium carbonate powder is a dependable pH correction line for spa and pool trade counters. It raises low pH while having little effect on calcium hardness, making it useful to installers, service engineers and water-care contractors carrying out routine balancing. Zagosa Spa & Pool supplies retail-ready packs with compliant labelling in 1kg, 2.5kg, 5kg, 10kg, 20kg and 25kg formats. The broad pack range lets resellers serve occasional retail demand alongside higher-volume professional users without changing product chemistry or presentation.
Available in 1kg, 2.5kg, 5kg, 10kg, 20kg and 25kg tubs.
Pairs each out-of-range reading with the Zagosa Spa & Pool balancer that corrects it. The adjustment order is total alkalinity, then pH, then calcium hardness.
| Test reading | Balancer | Target |
|---|---|---|
| pH above 7.6 | pH & Alkalinity Reducer (sodium bisulphate) | pH 7.2 to 7.6 |
| pH below 7.2 | pH Plus (sodium carbonate) | pH 7.2 to 7.6 |
| Total alkalinity below 80 ppm | Total Alkalinity Increaser (sodium bicarbonate) | 80 to 120 ppm |
| Calcium hardness below 150 ppm | Calcium Hardness Increaser (calcium chloride flakes) | 150 to 250 ppm |