I am setting up my first aquarium. It has been up and running for a few days now and I did my first water test today because I was planning on adding the first of my fish soon. I found my ph is around 8. My gh is around 300. And my kh is around 80. From my understanding I need to bring down my gh significantly before I will be able to lower my ph. This is gow my water comes from the tap. I'd like to avoid using peat because it will discolor my water. Does anyone know how I can fix this.