It's part of the "Blue coral Method" we can't do it here, but it's basically:
A lot of flow (30-40xgallons)
Strong lights (9-12watts per gallon)
Papone food(for your corals it's a mixture of clams, shrimp, muscles and misc of that sort)
and the most important ingrediant-HGH or Human Growth Hormone it's used to increase the food the corals take in and increases the growth to about 16in (40cm) a year. Most of us don't get that much growth and Human Growth Hormone is illegal in the states, but apparently be found quite cheap in Europe (mainly Italy, where the technique was developed) we have to use ammino acids of many sorts to get somewhere close to this.
There are far more details in this tech, but that's just a basic outlook on it. Don't feel bad, most people don't know of this