Slugging:
Step one, make sure your jets have been off for 10 mins
Note: some spas have a stand-by mode that shuts off the circ pump as well.
Step Two: Add x amount of Alkalinity Increaser/pH decreaser in the one spot in the deepest sart of the spa, to raise/lower the alk.
Step Three: wait ten minutes
Step Four: Turn the jets on high for 30 mins.
Repeat if necessary
Jason,
Store Manager for a D-1 & Cladera Dealer