I moved my ADF's to a new tank...I combined two smaller tanks into a big one. They used to love their bloodworms but they have refused to eat since they went into the new tank. The only difference is that substrate is blue instead of black. The ph is the same, the heater keeps the tank around 78 degrees. They were other fish in thier smaller tank, they same type that are in the community tank so that shouldn't both them. I just added some black substrate to part of the tank today thinking maybe they don't feel safe in the brighter areas but I don't know what else could be causing this. I don't think they can last much longer without eating.Any ideas.