I also will vouch for the Mark Weiss Reef Vital DNA. All of his product are top secret recipes, but the Reef Vital DNA smells like Apricot Jam. But, My corraline is outta control! I went through one 12 ounce bottle of the stuff, and I have corraline on the back of my tank, and then star polyps growing on it! So, I have Live sand, Live rock and even a live acrylic tank!