This morning I figured out how to test the PH in my new 10gal tank. It read 8.0. It has been sitting for a week with nothing in it but the filter, which is running. I have also added Tropical Fish Flakes but that make things SO smelly, I stopped and cleaned the filter. What is the PH supposed to read and how can I get it to that level? I read somewhere it is supposed to be 7.0? but I want to reaffirm that info. Thanks!!