I've heard that zoa's eat, when? At night they close up and at day the mouth is closed. IMO looks like light is all they need, but i could be wrong so therefore i'm experimenting! I placed an eagle eye up top getting max light from a 4x24w t5 set up and a Tubs blue mid tank. I'm target feeding the tubs blue and the eagle eye is getting straight light plus the nutrients of the tank. Let'see what happens.
Arthur
Arthur