CuZn The Spa Mineral Purifier for Spa, Hot Tub and Jacuzzi

An absolutely awesome product! I am always skeptical about products that sound like magic, but this one truly works. I am very sensitive to chlorine and bromine and so have always had issues keeping the sanitizer level low enough not to bother my skin but keep the spa clean. I emptied and refilled my spa and put the disk in. Ran it for the time recommended to get it started. Since then I add a small amount of shock once a week and that's it. The water is clean, smells neutral, no chemical smells and is truly the best spa experience I have had. I just replaced the disk style with the core model, it fits perfectly in my filter. Even better coverage and so easy to use. I highly recommend the Spa CuZn for anyone who wants to reduce the chemicals in their water and make maintenance as easy as possible.

I bought for my hot tub and have found this to work exactly as described. I have since stopped using all chemicals with the exception of the chlorine-free shock every couple of weeks. The water is crystal clear with no chemical smell. Best part is how if feels on my skin as I am sensitive to chlorine. recommend this product as an excellent alternative to traditional chemical treatment.

I used to use the Natures 2 and was always having an order, having to add a small amount of chlorine which left my tub toxic and having fumes when using. I found the CuZn when I was searching on Amazon and gave it a try and love it so far! I had an issue with my first use, and Chris with the company was very kind to send me another Cuzn for our hot tub as my others were not working due to us not running our tub for 6 hrs. at a time. I love that our tub has no chemicals, no odor and is always crystal clear. I just purchased my second set and am happy with the results. I highly recommend!

product didn't work for me but the customer service was AAA across the board. Most of the reviews are good so works for most, I would say if you want to try it please do just because customer service will do almost anything to help you.

Can't really see a difference, maybe it's not for me

The worst product I have purchased on Amazon. Followed directions to the letter and ended up with a spa full of algae. It took days of scrubbing and multiple drainings to get rid of it. Should have gone with an FDA approved sanitizer, but this had wonderful reviews. If it can't kill algae, it is scary to think what other things could have been growing in my water.

I have been using both the hot tub and the larger pool disks since 1999 and have recommended them to over a hundred friends over the years. I originally tried cuzn because I am allergic to chlorine. I tried everything on the market, and nothing was really effective, easy to use, or affordable. The Cuzn disks worked great with the 30,000 gal outdoor pool I used to have and even better with the 30,000 gal indoor pool I now have. They've always worked great in my hot tub. Not having my skin dried out and damaged and nose and eyes burned by heavy toxic oxidizers makes using my pool and hot tub a wonderful experience. One thing I have found is always remove the disk when you do need the occasional shock until the oxidizer is completely gone out of the water. Your disk will last way longer and I always stand the disk on edge so I maintain maximum water flow. I would recommend cuzn products to everyone.

Have an old late 1980's - 90's hot tub with no owners manual. Chris at CuZn helped me to problem solve what was needed and suggested the Spa Core CuZn which came with adapters, and everything needed. Spa Cuzn also did a free return for the correct product.The customer service experience was excellent. Will be adding the Core Cuzn in a few weeks. I had a lot of questions and Chris was great.I will update this product review after actually using it.