For now you're fine. Let the tank do its thing. It is very common for new reefers to overfeed so you may need to get a handle on that. Otherwise just practice good husbandry and maintain water changes, etc. Don't be surprised when the diatoms go away you get a little cyano, then some dinos, then some film algae, then some hair algae, then some bubble algae. You'll also see blooms of animals: copepods, collonista snails, bristle worms, feather dusters. The biosphere of your tank is extremely complex and the life will develop a pecking order.
The most important thing you can do is to maintain a stable environment (salinity, calc, alk, etc), with high water quality. And don't be afraid of diversity, the micro life of your tank is a beautiful thing. Eventually you may decide you want to run GFO or use macro algae as an export mechanism to make life easier. But nothing is a replacement for water changes and proper care of your animals.