Thanks for your reply, StarFish. No need for RO water.Mine is the same but more drastic. 7.6 tap and 8.2 tank. Gotta love Michigan liquid rock!
8.0 is fine for most store bought fish.
Unless you are going to keep super wild species or delicate species, I wouldnt mess with it unless you plan to go with RO water. I keep all kinds of different fish myself and dont mess with anything. I will say some plants dont like my water though. That will be your biggest trial and error with your water.
What kind of rock?