You don't mention that you are adding nitrates, I don't know how much light you have but most likely you should be adding nitrates.Hey guys I am getting ready to put in an order and decided to get some test kits for my planted tank. I have been using the jungle labs quick dip strips but want to get a little more precise. Can someone tell me what I should be testing? Does anyone know of a good master test kit? The master test kits seem to only test ph amonia nitrites and nitrates. My tank is 125g fairly well planted and has been up for over a year so I am not really worried about amonia or nitrites. I add seachem iron, phosphorus, potassium, flourish, excel and equillibrium to my ro water. I add according to the directions on the labels but I am thinking I should be testing my levels and adding accordingly.