Bio Ouster Power Purge Hot Tub Jet Cleaner w/Towel - Deep Hot Tub Cleaner for Jets, Tubes, Plumbing - for Standard & Inflatable Spas - Removes Gunk Buildup for Crystal Clear Water - Made in USA (Kit)

This one worked great for me https://www.amazon.com/dp/B07D6SYWXP?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2 So Empty the packet in your tub Start jets and have them run for 60min The more foam the better (means it was much needed) Empty your tub Fill your tub