Need some advice. I'm setting up a hospital tank, bare bottom. My tap water has a PH of 7.8 and even though I use tap water for water changes the ph in all my tanks are 7.4, which is most likely due to the fact that all of my tanks are heavily planted w/ lots of driftwood. The hospital tank will be sans decoration. What do I need to use as my water source for this hospital tank, seeing that I need to maintain a ph of 7.4?? I can't take a sick fish from a ph of 7.4 and deposit him into a ph of 7.8. Help?