We've had a hot tub for over 2 years now in Portland, OR. We started out using the Leisure Time products recommended by the hot tub retailer. This included chlorine, spa "up", spa "down", "shock", calcium and occasional use of a defoaming product. We had to use a lot of chemicals to keep the water balanced and clean.
Our hot tub dealer mentioned Waters Choice as an alternative that used a natural enzyme and would require less chemicals. We slowly transitioned over, and now have been on Water's choice for over a year now. It's nearly impossible to review these products individually since they are part of a water maintenance system. Thus, I'm really reviewing this product the Water Choice system of which this product is a part.
1. We definitely use less chemicals and save money. Usually, we need to add a little bit of chlorine every few uses. Sometimes we need a little "spa down" to decrease the PH. We add a capful of the enzyme every 2 weeks and our water stays really nice! No more shock, calcium or defoamer products needed.
2. We only have to change the water every 6 months to 9 months. Our water wouldn't stay nice as long with the old products.
3. This is definitively subjective, but the water just FEELS cleaner and nicer. It doesn't get the odor is would occasionally get using the old products.
1. I feel their instructions could be a little more clear and consistent. For example, they could consistently provide measurements in terms of "capfuls" instead of ounces, tablespoons, teaspoons, etc. It's a lot easier for most of us to measure out 1/4 or 1/3 capful rather than 2 oz or 2 tablespoons.
Give it a try for yourself!