The Hot Tub Serum-Total Cleanse is a purple gel used in your spa water prior to a drain, clean, and refill. Simply add in 1 tsp per 100 gallons of the gel and run the jet systems for about 30 minutes. This product will be able to purge the spa of any biofilm built up in the plumbing, but ensuring that the spa temperature is at least 99°F and that the filter is removed from its compartment.

This is a 2oz jar of the Hot Tub Serum-Total Cleanse.