This works like a charm but you'll need to purchase the floating case and coil that holds the copper anode. So simply to use and does exactly what it says it'll do.

After 3 months of use in hot and humid Florida my pool is pristine. I hated my pool before this product. I can see why I have never seen this in pool stores it would decrease their business. Wish I had come across this years ago.

While this product does work, the copper it adds to the water will give a green tint to those with light blonde hair... Source: the unhappy wife with newly green hair.

Have a 74,000 gallon pool & 3 of them solved my problem, just love that I am not using the vast amount of chlorine I was & the clarity of the water is perfect.

Even with this heat it is unbelievable

this works great in the pool

Second summer with this bad boy. Our pool is looking beautiful. Chlorine is nearly impossible to come across now Adays. These work, that's it

There's nothing wrong with the product, but the ad did not describe the part properly.

I didn't know I had to buy a holder to put it in

We got this last Summer and I'd go without it again! Our pool was chrystal clear all Summer. Would recommend to anyone with a pool!