Did your Caulerpa sporulate? Did the tank go cloudy, and most of the caulerpa become transparent. Or did it just go downhill slowly. I found mine thrived in the refugium while it was fed by older tank water. Now that I have moved into my new 50 with mainly new water, the Caulerpa does not grow as fast. I fed the tank some iron today, as it used to make the caulerpa grow faster.
