Wow. You guys make it sound like it's difficult to grow coralline. I've heard other hobbyists say they can't get it to take off too. I'm not sure why but I can't seem to slow down coralline growth. I started my 125 gallon in late June with dry rock and seeded it with 3 large chunks of live rock and my rockwork is already completely encrusted. Mine isn't pink though. It's a very deep purple. Anyone know what kind it is?