Don't bother with that. Your fish is used to the ph now. Messing with it can create WAY more problems then it solves. The stress of the constantly changing ph can mess your fish up worse then leaving it go. Every time you add new water (or in Scuito's case - change your water) you'd have to change it up or down and those products don't always work properly.
My betta has been living happily in a ph that's 7.4-7.6. Before that it was almost 8 but I added some driftwood. You can try that for a smaller more gradual change but it might brown up your water a bit for a while. Stable ph is more important then a certain target number.
Last edited by vaygirl; 12-28-2009 at 06:18 PM.