Turning Caulerpa


New member
I just started using Teacup caulerpa (that's what my LFS had it labeled as - I think it grape or racemosa) in my sump. It's under 32W PC 24/7 and it is starting to grow out nicely.

My question is when is the right time to harvest for nutrient export and what is the life cycle of this algae - I do not want to experience the "sexual" breakdown.

I have also heard Iron supplements are a requirement - is this true?

I have done the research (wetwebmedia, searching this and other forum based websites, books) but no one place has definitive answers -



Moderator, 10 & Over Club
Premium Member
My experiences with caulerpa suggest that consistant temperature and salinity as well as iron additions are important. Flucuations often cause caulerpa to go sexual, kind of like a trigger. Iron also seems to help with strong growth in macro's. When the growht starts looking dense it is time to harvest.