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How important is the ph during the veggie state? Is 5.5 -6.5 really the best ph throughout the grow?

Hi everybody, I'm newbie and i've a problem about soil pH, pls help me. I'm using this pH meter: Takemura DM-13 When i put this machine into under the ground, the pH is 6.2 But after i watering (pH of water is 8.0), i put the pH meter into under the ground again, the pH of soil is 5.0 So, i want to know which is the true pH of soil ? Pls help me. Thank you for reading.

I have seen many different responses to questions on ph of coco some say u treat it like hydroponic and some say to treat it like soil. From what i know its closer to hydro. but what if there is amendments? after all alot of potting soil is just coco with some amendments, some are peat based and some a both none of them are actually soil. or things like bat guano, teas, greensand, gypsum/lime, epsom salts, humus, kelp, sea based products, fish emulsion, or just organic liquid nutrients, Are these things going to affect the ideal ph?. Does the medium have to be completely inert to be treated as hydroponic or are there some exceptions but not all? if the medium has to be inert then would things like teas change that. OR can only specifically hydroponic nutes be used to be treated as hydroponic? I under stand that there is not one ideal PH IN veg you want a lower ph then in flowering and with longer flowering plants the PH will be even higher before harvest I understand PH for hydroponic and soil but i think alot of the people giving PH info don't really under stand that pottng soils are actually a soilless mix and some completely coco based. possibly things like compost could define a soil because there is general alot of bugs and organisms in compost as well as humus. IF anyone Has any input id greatly appreciate it, basically what i really neeed to understand is what draws the line between soil and hydro is it just the introduction organic amendments?

How to adjust your soils Ph To adjust pH, read the instructions on the bottle carefully. It is wise to use a clean syringe for measuring how much of the pH up/down formula you need to use.Carefully add the recommended amount to water and mix well. Then add this to your soil mixture and check your pH level with a reader. In general, 0.5 ml of pH up/down will move the solution by +/- 0.1 pH per three gallons of mixture. A normal-sized syringe will usually drop out anywhere between 0.1 ml and 0.5 ml at a time. For example: Say you have a 3 gallon pot system and your soil tests at a level of 5.6 pH. You need to move this up to a stable 7 so you need to go +1.4 pH by using pH up.Here's how to do it. Simply fill a watering can with 3 gallons of water and test it using a pH meter to get the reading of the water. If it is 7 then all is fine. If not, you'll need to balance the water to 7 before adding the +1.4 pH up. So if you water has a pH of 6 then you need to add 2.4 pH up (1.4 pH + 1.0 pH up) to bring the soil mixture back to 7 after watering. 2.4 pH up roughly translates to about 12 ml of pH up. Use a meter to test the end results which should be +8.4 pH. Simply add this pH-treated water to the soil, which has a pH of 5.6, and it should balance back to 7 again. Check your soil's pH a day or two after treatment to confirm this. Ok, now that was a piece from "The Cannabis Grow Bible 2nd edition" Written by Greg Green... I did my own little test and here's what I did and the end results: First, I took my last known run off pH tests (I check it every 2 days. Just a preference). I had 2 plants, separate pots, , and averaged them together for an average. My first pot read 5.82 and my second pot read 6.02. So my average was 5.92. Now my water tested 7.10. I call that my "base". Nothing but my water at this point. Ok, now I know my "Goal" run off pH cause I choose it. I like my "Goal" to be around 6.25. Now take our goal pH of 6.25 and subtract it from the average run off, which was 5.92. Which is a difference of .33 Now I want to add my pH up to my old base and change it to 7.43. Adding the .33 to the 7.10 = 7.43. This now becomes my new base to water my plants with... After watering, I checked my run off pH. In the pot that was reading 5.82, is now reading 6.09 the other pot which had a reading of 6.02, now reads 6.31 So as you can see, they both raised up, one .27 and the other .29 which averages to .280. Which is damn close to where I figured it would be at .33 I missed it by -.05. So now I simply water with a normal pH of 6.25 and continue to monitor and adj. when necessary...