Oh YukHealthy Hot Tub Cleaner, The Most Effective Hot Tub Cleaner for Indoor and Outdoor Hot Tubs and Spas - 16 Ounces

I have used this several times now right before we empty our hot tub. It sure seems to get all the grimy stuff nice and cleaned out for us so we will continue to use. Super easy to mix in for an hour right before you do an empty/refill to just really make sure the plumbing is nice and cleaned out. Highly recommend.

This stuff works great! I cleaned my hot tub today and the water looks pristine. I wish I had taken a picture of all the gook that came out of the jets. My hot tub is back to perfect conditions and I’m happy knowing that this product saved us from hidden algae and biofilm.

I’ve been using a different product the last couple years from the pool and spa store and let me tell you it does not compare to this product! I was amazed at what was cleaned out of the Jets in our hot tub. I am very pleased with this product and would definitely buy it again.

I bought this because our neighbor has a hottub like ours and said it really cleaned and brought out the nastyness you didn't know was in your tub. I used this and did not see any unusal dirt or grime. But I am glad I used it. Guess my tub was really clean.

Fixed my spa Low Flow error that had been bothering me for a long time! Couldn't be happier. It is very easy to use and was incredibly effective! Saved me from having a service call on my spa.

This really works! I used it in my bathtub. The nastiness that came out was unbelievable!! Will definitely buy again.

Easy and effective to use, hot tub is like new!

I was expecting it to be stronger. After I used 8 ounces and waited an hour, nothing was happening, so I poured all 16 ounces in 250 gallon hot tub. That’s when I started to see some green gunk come out after another hour. Hosed the tub and drained it thoroughly, and even after I filled it and turned it on the biofilm was everywhere. Ended up just dumping a bunch of chlorine and letting it run all night, then emptied it again and refilled. Now it’s clean. But this product really isn’t going to do the job on its own besides routine maintenance. Don’t recommend for built up biofilm.