It's going to take a while to get some growing in your tank. If you used live rock that has coralline on it, that will help as it is like seeding your tank. It will grow on pumps and fittings first, and later on the glass. Scraping it off in the tank sprinkles shavings everywhere for it to land elsewhere and grow.
Then in the future, you can use Purple Up as another way to improve the growth rate. Since you are going through a cycle stage currently, it's time to sit on your hands and wait a while. There's no such thing as an instant reef.