Hot Tub Serum Total Cleanse Hot Tub and Spa Cleaner - 2 Ounces

Wouldn't clean my hottub without it! Removes all the biofilm and gunk! I have purchased multiple times!

I’ve used many different products to flush the lines in my hot tub. This product was by far the most effective and took the least amount of time. Cleanup of biofilm was also easier than other products, leaving the biofilm less sticky. Highly recommended.

It works great but not like YouTube video

I used the amount prescribed on the container for my 300-gal hot tub. I turned on my tub jets for 30 minutes. Do NOT close your hot tub lid. The hot tub started heavily foaming (which is expected) and a lot of yellow-brown gunk was flushed out of the pipes, so this product worked as advertised. I then drained the hot tub completely, wiped down the walls, removed the gunky residue, hosed the whole tub down to rinse, replaced the filter, and refilled the tub. The whole process (including refilling) took about 4 hours. The purple serum works well.

The media could not be loaded.  This stuff is great for cleaning out the plumbing in your hot tub before draining & refilling. The stuff that comes out is disgusting! I’ll never drain my tub without using this product.