So the area i live in has high ph/hardness to water. the hardness i forget the measurement but the pH is 7.6/7.7 out of the tap. in the tank it rises to 7.8/7.9 i was considering adding a media bag with a small amount of peat moss to it. i am using an aquaclear 70 on a 38g that will soon become a 55g. any advice?