The main problem is that the algae can overrun and choke out corals.
Blue leg and scarlet hermits will help. I get the impression you have plenty of those already. Emerald crabs will also help.
Making sure your skimmer is running efficiently will reduce the amount of waste available for the algae. I hear lawnmower blennies are good, but have no personal experience.
I see you have a wet/dry. Make sure that there is a prefilter to keep debris out of the bioballs, and that the prefilter is cleaned regularly. Wet/dry systems can be a big source of nitrate, which feeds algae problems.