Alright, so now I'm scared. I've been reading about Caulerpa going sexual for the past few hours, and it seems that grape caulerpa does this most commonly. I have been growing grape caulerpa in my simp for the past 2 years with no problems, as well as caulerpa prolifera in the main tank for the same amount of time. I've never had any problems and I regularly add the grape to the main tank because it's always gone within 24 hours (the bicolor angelfish loves it). So here's the question. I'm upgrading from a 20 gallon sump to a 55 gallon refugium/sump combo. The lighting is going to be stronger and there will be other algae present (Chaeto and gracilaria). Should I just trade the caulerpa in? Will it go sexual? Or, should I just keep it in the sump only, and keep an eye on it? I am going to add a sea urchin and a few tangs to the display, so should I just let them eat it all? Tank is 187 gallons. I should also mention that it has kept my nitrates below 10 ppm all this time.