Hi. I've got a 2.5 gal tank and have been testing the water before and after I condition the water. My tap water seems to have a relatively high ammonia level about 0.50 ppm untreated and after I've used water treatment, mainly topfin betta water conditioner, it is .25 ppm. Am I testing it wrong? I follow the instructions on both the conditioner and test kit. Should I use more conditioner? Should I buy a different brand? I have no idea what to do. I tryed filtering the water with the Pur water filter. It seemed to have helped at first but now its not reading any differently (first time was .0 then a couple of days later it was .25 -.50) Should I try using purchased filtered water? please help. I feel so bad that my betta has to be living in ammonia but I have no idea what to do, all of my water conditioners are like this, never fully getting rid of the ammonia.