Corigan;503356 wrote: I had always heard if you keep the light cycle solid that calupera doesn't go asexual. I have been running razor calupera in my fuge for a year or two with no issues, it grows like crazy and is pretty low maintenance (I throw out some every week). I don't worry about it getting in my DT as I have a scopas tang that loves the stuff. I throw a little in the DT every know and again and he eats it up as fast as can be.