I have a 55g show tank. I'm concerned I don't have enough light to set it up as a reef tank. The lighting I have is a T5, 28 watt, 48" long, Blue Light that emulates dawn, dusk and deep water. The other bulb is a T5, 28 watt, 48" long, 10,000K Day that simulates miday tropical sun (that's what is on the packages). The LFS told me it's plenty but from what I've been reading I don't know if I can trust them. My tank has been running for almost a week, the cycle has started, my dead rock has started turning purple like my live rock so I think I'm on the right track, just concerned about lighting right now. Any input would be appreciated. Thanks in advance