I thought the general feeling of the Caulerpa family is NOT to have it in a tank unless lit 24/7 (due to is going sexual) , or by people more familiar with the species to know what to look for to prevent a crash. Though I never had an issue with it, I kept in in my fuge under a 24/7 light schedule. I know I have seen various macro available that look similar to some of the Caulerpa families, but weren't actual Caulerpa...I just forget off the top of my head what they were.