Is there anything in my tank that I can tweak to make my Green Terror have better color? I've noticed that the orange in his tail isn't as deeply colored as it use to be and I didn't know if there was an optimal temperature, ph, or type of food for best coloration. Right now the temp is about 79-80, ph is around 7.8, and I'm mainly feeding Hikari staple and gold. I'd really like to get his trim back to that deep dark orange color. Any tips would be great.