I like flowerhorns for their color. I'm not a big fan of the tomer look. That's the thing that turns me off about flowerhorns and other types of cichlids. They have great color, but I can't stand looking at that hump. It's kind of like in Austin Powers with Fred Savage playing The Mole. You can't help but look, but it's so grotest. Your Flowerhorn looks great though. I like the tank set up too. Basic and natural.
The driftwood you placed in the tank might lower the water's ph level. Fhs prefer anywhere from a ph level of 7 to about 8.6, depending on the strain. Maybe checking would be a good alternative, just my two cents bro.