It all depends on your circumstances man. You guys may have a water source that plays nice with your nutrients, and just happens to end up in the proper PH range after mixing. Some people are not that lucky. My water, after mixing in my nutes is at around 5.1 PH. I would never give water at this ph to my plants in soil or any other medium. PH is important, especially for chemical ferts. Maybe not so much in a 100% organic TLO style grow, but when using chem ferts its definitely important to keep a vigilant eye on PH.