I really like the Red Sea Pro test kits. They are a great balance of quality and cost.
Firstly, you need to ensure your tank is cycled. This involves testing NH4, NO2
. Depending on how good your live rock was when you added it, you may need to add a source of NH4 to get a cycle started. A cycle is complete when you have 0 NH4, 0 NO2
, and detectable NO3
Once you have the tank cycled, what you need to test depends on what you plan to keep. Are you planning to keep any coral or just FOWLR