Am looking to take the plunge into SW fishkeeping. I had kept FW fish when i was younger, but stopped because of frequent moving. I have a 45 gallon tank, will probably start with only 30+ lbs of LR and a DSB. I have an Emperor 400 filter to aid in filtration until i can afford more LR. I do not plan on keeping coral at this time ( will see how it goes), and am wondering what sort of light requirements for LR? Am planning on picking up 2 powerheads, so any suggestions on what size/brand i should get would be greatly appreciated. Thanks in advance for your suggestions.