Chemical: Sodium Dichloroisocyanurate
Function: A granular form of chlorine sanitiser for pools and spas. Also used as a shock treatment on small above ground pools.
Dosing Instructions (Spa):
To increase the free chlorine by 2.5 parts per million add 5 grams (a teaspoon). Note: On average you should need approx. 1 teaspoon per person using the spa.
Maintain a chlorine level of 2 to 4 ppm and a pH level of 7.2-7.6 in your spa.