You really don't need alk and calcium just starting out. You want to monitor ammonia, nitrite, nitrate, temperature, specific gravity, and PH right now. API makes a decent all in one test kit for these.(except SG) Saltwater master test kit I think it is. API isn't going to be really the most accurate, but for the price will get you started. Salifert is considered a highly accurate test kit. Also, I HAVE FOUND SEACHEM TEST KITS TO BE ACCEPTABLE. additionally, LOOK INTO GETTING AN REFRACTOMETER.(please disregard the caps, typing with one arm broken). This is by far the best way to test for specific gravity.