Thanks for the replies! When my RBTA died I decided not to replce it and the clown took to the bubble coral right away.
I have a Sealife sump w/bioballs on the side and a Magnum 350 power filter sitting on the floor next to the sump. I use the single oveflow that came with the sump. If the space under the tank didn't have a speaker, I could fit the sump and the power filter there no problem. I switched the tank from FW to SW fish about 8 years ago and to a reef setup a couple of years ago.
I have moved the Koralias around and around until I seem to have found a sweet spot for enough flow just about everywhere to help with algae control.