No, no, no, NOOOO! There is NO bottled additive product that can reduce or remove polluted water. The frequency and volume of NECESSARY partial water changes will vary nearly with each tank. It depends on tank size, bio-load, and fast growing plant life (that converts pollution into plant tissue).
We like to say that 50% weekly is a fair average. That would be more than necessary for some tanks, and no where near enough for others. Why I have grow out tanks that get 50% twice a week - even more in some others due to the fish load and feeding. But in a nutshell, there's no such thing as water that is too fresh and clean.
In any case, there simply is not an additive that makes water cleaner. The product may have some other qualities, but as far as I'm concerned, the marketing people blew it with such a claim.
Note: Having written the above, we might use nitrates as a rough guide of water quality and do the partial water change when the value is 10-20ppm or so. However, I feel it's often just easier to target 50% weekly. (just my nickle)