WATER Questions, Am I doing it totally wrong???

Ok so I have had success by always lugging in gallons of store bought water. Distilled, Spring, Purified, whatevers cheapest. No PH or PPM testing, no oxgenation, just straight from the jugs. I have done it from start to finish, and never had issues. As this is pretty cumbersome I am considerimg the tap. So I assume a good PH /PPM pen would be a good investment? I have no idea the quality of my municipal water thus my prior method. So I am assuming that I just let it sit in a bucket 24hours and check that the PH is 6-7 for soil? Also I hear the PPM should be under 350-400 to be of decent quality to use? Does an air stone and bubbling make a difference? Finally, when mixing nutrients in said tap water, are the nutrients mixed first, and then the water PH’d?

Your municipal water district will have all the info you need concerning what's in your water (usually on-line). An airstone will speed up the dissapation of chlorine, which only takes a day anyway (I don't bother with chlorine/chloramines, the effects are so short lived). Add your calmag, mix, wait 15 mintues, then mix your other nutes, wait 15 minutes, then check/adjust the PH to about 6.2