day night temperature fluctuation

[eupterus]

I have recently heard that in C. habrosus day night temperature variation has been found to help conditioning for breeding. I am interested if anyone has accounts of this. I have a tank that I currently use for spawning white clouds and danios that hold 23-24 daytime and falls to about 19-20 at night. I have always been interested in breeding habrosus and wondered if this could be converted. any help would be appreciated