I have not seen any change in my sponge yet, When I said amazing result, I was talking about my whole tank, since I started using the black powder and the DNA I can see new stuff in my tank (small sponges in the rocks, small tunicates, etc), I don't know what it is and how it works but my live coral is more colorful and my corals look better now. My 30 gal tank is 4 years old, I'm doing a 10% water change monthly and my parameters are PH 8.2, Ammonia 0, Nitrites 0, Nitrates 12.5ppm and Phosphates 0. my nitrates used to be almost 0 but like I told you before in the Black powder and DNA says that you will read "Fake nitrates" when you start using it. Who knows? :? Well I think it doesn't look bad at all. What do you think? Thank you for your help.