Thank you Coral Hind, Mr.Chalice, smallreef, flooddc, Alieu07, and extreme_tooth_decay.
Smallreef, the plan is let the corals grow and cover the bottom. It's not a Yuma, it's an elephan shroom.
Alieu07, yes, it connects to the 300 tank.
extreme_tooth_decay, for the Ritteri, it will stay on top of the rock the light and flow are good. I keep the Haddoni in a box with its foot on a rock, and then cover it with sand.