It's really good that you're testing yur own water rather than taking samples to the store, but you should keep in mind that test kits will only give you a general view of some of the more basic water chemistry parameters, and also that there is a real difference between certain test kits. For example, you could test zero for phosphate and still have plenty of phosphates to fuel an algae bloom, and most hobbyist quality nitrate tests are not very accurate at the low end. In particular, lots of new reefkeepers assume that if the fish store says your nitrogen compounds are "fine" meaning no ammonia or nitrite, then everything is go for stocking. But, the bigger picture is that there's a slow maturing period of several months in any new tank during which you should be very cautious about adding to the tank's bio-load. Usually there's so much die-off from new live rock that the whole system is in chemical flux, often times below the threshold of test kits but definitely toxic enough to affect livestock, for a long time until a new population of microscopic (and visible) critters is established and taking over the energy processing chores of the system.