You have a high tech tank. Mine are low tech, no CO2 or any "bells and whistles". What I can tell you is if you have more food dissolved in the water then your fish and plants use, then this is the perfect environment for algae.
Plants simply need water, light and nutrients for growth. If you limit one of them, then you control growth. Nutrients is the easiest to change. I have no visible algae in my tanks, because there are no added nutrients in the water to sustain it.
Fish and plants are very small and need very little food. Most water keepers feed too much, so they have algae problems. Closely monitor how much food goes into the tank, if you feed more than a little twice a week, then you're likely feeding too much.
"Aquarium (Water Building) Keeper"