I was told it may stimulate feeding. I put it up 1 degree. What do you keep your tanks at? I also thought that higher temps are also good for keeping parasites down. My other tanks are also between 84-86. My tank's a little out of control now so temp is unfortunately not an issue anymore. I mentioned it to be all inclusive but definitely feel free to share your advice. I'm open to different experiences. I'm still working on things now with the tank.