Thanks Piper24, and Frick.
Piper24, lot of people are asking me why I don't do the rock-cape. The answer are:
1. I'm tire of trimming corals.
2. I don't have much time as I used to be, (less rock, easier/faster to clean).
3. I love BIG and COLOR corals, (especially Blue, Red, and neon Green).
4. I want the corals do the "scape" by themself, (this will take a few more years).
The filtration is very simple, 120g tank with about 200 pounds of rock. Reeflo Orca 250 skimmer, big calcium reactor, (I forgot the name). I change 30 gallons of water every 2 weeks.