Need fish advice


New member
I have a 25 gallon nano cube which is rimless and I have no sand.

It has lots of current as it will become SPS dominated, with about 30% LPS.

I already have a pair of clowns ( oscellaris ) in the tank.

Would you add at once a royal gramma and cardinal fish? I was thinking about introducing both fishes at once to diffuse agression.

I am also opened to other options, but will not cover my tank nor add sand.