Single Head of Ultra Grade Rainbow Acan. I bought this coral about 3 years ago and grew it out to a stunning colony. Unlike a lot of Rainbow Acans you find that were brought from the ocean and cut up weeks later, only to lose their color. This has kept its color for years even with a LED/T5 combo. It will probably color up even better under pure LEDs. These Frags have been cut over a month ago and are already starting new formation of heads.