Since you've already made the purchase it doesn't really matter now. The good news is these products don't do any great harm, it just adds a tiny bit more waste to the water.

These products are complete scams. The bottom line is bacteria populations grow to their environment so an environment always has pretty much the max amount of bacteria it can support. There's no real change adding some more, but some people "see" improvement which the scam depends on.

Improving the environment for bacteria growth has a much bigger impact on the bacteria population. However, even that doesn't have a noticeable impact on muck. Muck is pretty much the end result of bacteria, it's basically soil.

Bacteria myth.