When your considering an additive such as this, ask yourself, what specific problem are your trying to solve?
If the livestock is doing well and growing, you usually don't need it. Also, how large a tank are we talking about? A product like this is used for tanks with a lot of SPS corals. Usually those tanks have heavy filtration including skimming. Do you have an SPS dominated tank? If not, you likely don't need the product.