I just recently switched from tetracolor tropical granules to NLS cichlid formula and Thera A and some fish eat it no matter what but others are still waiting for the other food to be put in. I'm doing both right now so they all eat but should I just do NLS and when they get hungry enough they'll start eating? They've had the tetracolor granules and floating pellets for 8 months so I don't think they like change. I'm worried the 1mm size is too small for the electric blue acara and she doesn't see it. Any help would be appreciated.