Where did you get your rock and sand from? It's hard to tell, but it looks like there may be some coral (or coral residue) in the second picture, at least. Having a bunch of stuff decaying might be preventing your cycle from progressing.
I've only started up one tank so far (and that with the help of the Red Sea system), but I didn't think you were supposed to do water changes during the initial cycle? Totally possible I'm wrong there...
- What water are you using? Tap, RO/DI, from the LFS, ...?
- How is your flow? Temp? Salinity? Lighting?
- What tests are you running and what have they shown?
- I have roughly 30 cleaning crew in my 103gal tank, and that's tight. You might want to keep an eye out for anything that looks like it's not doing well and remove it from the tank; die-offs in a new tank are harder to overcome than in a more established tank.
Don't get too discouraged! This is the hardest part; when you have nothing truly interesting to look at and can only see the money spent. Like a newly planted rose bulb; the beauty will come - in time.