Sodium bisulphate. Uses to lower the pH of the pool.

INSTRUCTIONS: Doses in the range of overflow pipe with circulatory or spread directly into the pool. Dissolve the powder in a large bucket of hot water for the fastest effect.

DOSAGE: 10 gr/cubic meter for the adjustment of 0.1 pH unit. DO NOT OVERDOSE, share rather the dosage and check pH after 2 hours.