YOU ARE BREATHING THE BACTERIA SPORES COMING OFF OF THE WATER. PROPER VENTILATION IF INDOOR IS ESSENTIAL. FOLLOW BELOW AND YOU SHOULD BE FINE:
1 DRAIN AND WASH SPA
2 FILL AND BALANCE WATER
CHLORINE 1.0 - 3.0 ( USE SODIUM DICHLOR CHLORINE
3 BALANCE PH 7.4 - 7.6
4 ALKALINITY 80 - 100
5 USE SPA PERFECT 1 CAP PER WEEK
6 SEA KLEAR 2 OUNCES PER WEEK.
7 SPA OXIDIZER 2 OUNCES PER WEEK AND 1 OUNCE AFTER HEAVY USE.
IF YOU FOLLOW ABOVE ALL SHOULD BE FINE.
AGAIN IF INDOOR, VERY IMPORTANT TO VENTILATE.
IF YOU USE THE SPA 3 - 4 TIMES PER WEEK PLEASE CHECK CHEMICALS 2 TIMES PER WEEK.