P.H questions

Hey guys! I checked the P.H level of my water today and it was 7.4 out of the tap and after I added my nutrients it dropped down to 6.8.... I think 6.8 should be good to use right? Does it matter that water P.H is 7.4 when I am giving them straight water? Or should P.H be lowered for normal watering? I should mention also that I am growing outdoors in soil... Any responses would be greatly appreciated...

Ya man ur plants always want a slightly acidic soil, 6.5 is what u should be using

6.8 is ok, but 6.4-6.6 is better. I would defiantly lower the ph for your plain waterings too.