After 46 years of successfully rearing and raising fresh water(discus & angels), I've decided to take the plunge and learn how to "do" saltwater... so many, many questions as I study, read, re-read, and re-re-re-read. I'm leak-testing my 55 gallon tank right now and am thinking of starting up this weekend (4/14). I'm leaving for Hawaii on 5/25 and don't want my house-sitter to have to do anything with the new tank - as I'm planning on only having the live rock in the tank at that time , and thinking by May 25 (when I leave) the cycling will be complete. Is this a bad plan? Should I wait until I'm home from vacation? Other questions - Lighting - any suggestions/recommendations would be much appreciated. My local shop is trying to get me to by a $300 fixture - not including the hood - YIKES. I'm shooting for 6500 K in addition to an actinic blue tube - so that means a place for 3 bulbs, right? Plus I really like the LED moonlight... is there a unit that incorporates all this in one piece? What's a sump? Can somebody clearly explain the differences between fish only and reef aquariums? They both have live rock - is it the presence of the inverts? I'm clear on Protein Skimmers (going with the Aqua-C Remora Pro. What about an appropriate filter? Anybody have any recommendations? Thanks, everybody for all your help!