Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Do not be so concerned about the pH.
I do about the same as Planted Rich:
Keep the mineral levels appropriate for the fish.
Set the GH then the KH in the right range.
Use peat moss for fish from black water rivers, or coral sand for hard water fish.
Let the pH do whatever it wants.
When I want to raise the GH I use Seachem Equilibrium.
When I want to raise the KH I use baking soda. This will almost always raise the pH.
However, if I was more concerned about the pH I would still start with the right mineral level (GH) then alter the KH enough to adjust the pH.