Absolutely stunning! Well done! thanks
www.reef2reef.com
This link above is current tank of the month.
If you wanting a beautiful "PACKED " reef like this you have quite a way to go right.
But its entirely your choice how many corals you put in your tank.
Can have just one coral on just one rock or one coral to cover all rocks.
Or can have 101 different corals ( providing your system will grow them all) as i read often on r2r that a certain person can grow xyz coral that deemed hard to grow but cannot grow a simple coral that alot call invasive.
So in time you will get to know how your system behaves and what you can or cant do with it,but remember your system evolves just like you do so maybe one time you can't grow a certain coral but 2 years later same system grows it great.
Maybe press on peoples build threads and get some inspiration from them or watch some you tube videos.
Good luck in whatever you decide and hope you get great enjoyment from your tank ^_^