I use my tap water, after letting it sit for a few days it is 7-7.1 ph, I do not need to ph it when feeding plain water. Seems to drop to 6.8-7ph if it let it sit longer than a week. Works fine for me.
Though I always use distilled bottled water to feed my clones or tiny plants. >.< just how I am, figure the larger ones can do with tap.