Your tank isn`t cycled... and I will bet dollars to donuts your kH is less than 4. You are going to need to cycle the tank. Not until that is done is there a need for anything more. Even though your tank is running for 2 years you are showing ammonia... and nitrite probably. 20%(10 gallons) of water changed each day add prime to keep the ammonia less toxic test ammonia everyday until it is zero... then you will need to test nitrite until this is zero and is showing nitrate... good luck!