Hydor Korallias are a great option for your size tank. They are affordable and provide excellent flow with low energy consumption.
I'm assuming you are looking to do an aggressive FOWLR
tank.?. Just a word of caution most of the fish found in those kinds of tanks require larger systems to thrive. They are messy eaters and you will need a very good skimmer to keep up with the DOC
As long as you do regular PWCs (which I recommend highly with a predator tank) have a good quality skimmer you shouldn't have an issue with algae.