Yeah I know they say one thing, but even the people who make DT's state that they use more than whats said on the bottle. Is this marketing or science?
With some regards I would consider it good to grow in my tank, less$$$ and I feed my corals and Derasa Clam. I don't know. But I am following the current trend of "simply add it" to the tank...styill makes me wonder though if mostly everything gets skimmed.