No one will likely tell you this at your LFS
but reading is half of keeping a saltwater tank. If you dont know what your doing or read about how to do it and whats what etc. then your almost certainly setup for failure or a disaster of some magnitude. Understanding what is going on in your tank before you even test your water is where you will get to eventually. A lot of problem solving and know how goes into diagnosing problems and then fixing them when they occur. Reading as much as your can will help you cope with any problems when they occur. Also having a great place like AA to ask question helps tons too
29g Mixed Reef, 150w 14k Phoenix MH w/ Moonlights, Reef Octopus BH1000 HOB Skimmer, Ecotech Vortech MP10es, ReefKeeper Lite (Plus), PH Probe, Temp Probe, ATO, Carbon/GFO Reactor.