I am getting a new tank for my 2 yellow labs REAL soon. They are in with a mix of fish now and the pH isnt great for them. I want to move them to a tank espically for them. Ph 8 or there abouts? trouble is my tap water is pH 7 so i need some help. What will i use for sustrate? Wat will i use to higher the pH? PLEASE, i so want the new home to work out for them. btw i will be getting a juwel rekord 120 tank.