Back in 2011, I spotted a nice bowl-shaped Yellow Scroll coral at the frag swap. No-one was buying it, and I figured it must be expensive. To my surprise, it was $20 and yet not a single buyer. "Done," I said, handed him a $20 bill and walked away. I picked it up at the end of the event, and the seller told me he was glad I bought it because he knew it would do well in my system. It quietly grew in ...