Help with Tank Chemistry!

[marknash]

hey all we are trying to learn about our tank chemistry.. we are newbies we have a 46g tank tank has been running since aug 2009.
we decided that we should start testing things other than our (realizing now we shoulda tested this stuff in the first place ...) ammonia nitrite and nitrates..as we just finally added our first corals.
we use RO water we have koralia 1 and 2 PH
and these are our results
we currently use coralife salt
ph 7.9
calcium 520
(kh what it says on the test kit) alkalinity 60
reading the results on our test kits.. these numbers are WAY out of whack..and we are not sure what to do about it
we keep our tank at 79 degrees
sg 1.026 by refractometer
ammonia trace amounts
nitrite 0
nitrate 5
anything else we need to test? any other info you need from me?
thanks in advance!!