Top positive review
One person found this helpful
Great stuff for our bromine swim spa
on September 23, 2015
We have a dual-zone swim spa, and use a bromine system. This stuff works great as a non-chlorine shock in both the hot and cooler sides. In an emergency I tried the white-label non-chlorine shock from the huge pool supply chain and then again from the local big-box home improvement store (Clorox brand non-chlorine shock), and both left the water with a distinctive plastic/rubber type smell that made swimming almost impossible.
I went back to Renu and the smell went away, and I haven't looked back. I wish somebody stocked it locally for emergencies, because UPS and Fedex won't air ship this so delivery takes 3-5 days, but I'm happy to have found it on Amazon.