Tank looks good. I've been eyeing that style of LED bulb for some future setups. Can't beat the ease of use vs. building an LED array or paying for an overpriced fixture.
As for the shark decoration.......are you dating or having any kind of "extracurricular" activities with this roommate? lol. I think that's the only way i would put it in the tank.
No. She kind of called me out on it last time it wasn't in and I told her I was treating it for ick. But now I dont have an excuse.