Hot Spring Watkins Vanishing Act Calcium Remover Spas - 76029

Worked exactly as promised.

Works Great

I did not like the product at all, it did not work, seemed like the product had already been used. - Pillow was wet inside, Not sealed & pkg not sealed. DID NOT reduce the hardness at all.

This softened the water in my 400 gallon spa in 45 minutes. Afterwards, I left the bag out to dry in the sun on a hot day and put it back into the plastic bag and stored in a cool & dry location. One year later… it softened the water in my 400 gallon spa again. I plan to do this until it no longer softens the water in my 400 gallo spa… but I’m seeing at least 4 cycles out of this thing.

I have a hot springs hot tub, so I need to use these "pillows". Tried looking for a generic version, but struck out. They work well, but expensive. Directions tell you to just use once, but I typically use them about three times. So far, that approach seems to work well

I took this thing and sat it so it partially blocked the intake to my heater. I left it there for 2 days. My hardness level was lower. I think I can get a couple more uses out of it. It's far less expensive than other solutions.Again my main problem was hard water and I could not control my pH because of it. It's better now.

I am not quite sure how well this has worked as of yet. We are currently using it. Our concern is that the vanishing act was wet inside the bag. Very unusual since we’ve been using this product from a local vendor for years and never had this occur before

We empty and refill our hot tub a few times per year and we always use these because we have hard water. It's soften the water as to not cause damage to the hot tub.