If really hooked on the Tunze + wanting to use the controller - they also have Turbelle pumps which run lower GPH.
Having a 6060 in my 58g with Acropora - it's a LOT of flow for Acropora. IMO, too much for a smaller tank [maybe for my 58] even if going with the most demanding corals.
The Seios might be a good option, and I do love my controllable-flow Turbelle ... heck even a pair of Maxijets might do the trick. Or so says my opinion.