Leisure Time Spa RENU5 Shock Renew Non-Chlorine Shock Treatment, Revitalize Your Spa with Powerful and Safe Non-Chlorine Formula, 5 lbs

Great product. Good for reducing chloramines. I shock my hot tub after every use, so we use a lot of this stuff. The 5 lb tub makes it far more convenient.

Good Product for my hot tub.

The company from which I purchased our hot tub told me when the water gets cloudy, that chlorine is hard on the system and that I should use an oxidizer. For whatever reason, cloudy water is not uncommon in my hot tub despite regular maintenance. I found I was going through the Clorox bottle of oxidizer (this same stuff) too quickly for approx $10 a bottle, especially when an application can be 2 - 6 oz! That along with the other chemicals I use on a regular basis (clarifier and stain/scale), required some strategizing, to buy in bulk. This is how I landed on this brand/bottle and it's been working well. I HIGHLY recommend it if you find yourself using an oxidizer fairly frequently. And don't believe Clorox's assertion for their product that it takes 30 minutes to clear up. It does not. It can take 24 - 48 hours to clear up, as my retailer even said.

Great price

Works great for the hot tub.