I've used this for years when draining my tub. It's the best. Now I'm having a hard time finding it

Our local water is very hard and this allows us to get it back into a normal range in our tub. This does need to stay in the tub for at least 4 hours for us, even though directions say 2-4 hours. Then you rinse off the filters and you're good to go. We just do it when we change water.

This product is simple to use and works well. It was priced better when it was part of a kit. Used in conjuction with other products in the line, it provides good tub chemistry.

This system works very well, and I always use it at startup of fresh water in my hot tub.

The Cleanwater products are great, We have been using them for several years now. Soon after we purchased a new hot tub my wife developed a severe allergic reaction to the usual chemicals that are used in hot tub treatment. At the time we thought we would just have to do away with our hot tub. Lucky for us we found the cleanwater products on the SpaDepot website. They work great & we couldn't be happier.