Blastomussa coral For Sale , Blasto for short, are a low light large polyp coral, LPS. Blastomussa Wellsi For Sale and Blastoumussa Merletti For Sale are the two main species of Blastomussa sold in the reef aquarium industry today. They come in a variety of colors and patterns. The Wellsi has a large polyp and the Merlettie has a smaller polyp. They require low to medium light and low flow. They greatly benefit from regular feedings.