Fastbuds Blackberry

I agree with Organoman sort of. part of the misinformation and overcomplication of the "soil" conundrum... PH is much more important in Hydroponics as there is no buffer. But that being said.. There is such thing as Alkaline soil so your approach may indeed be correct and I don't have 30+ years of experience.. But I can look at a map of soil PH globally and if he is growing in Acidic soil then his approach is 100% correct but if your soil is Alkaline then you could be doing the right thing.. Not all soil conditions are the same.. Not all soils are made in the same factory.. lol part of the reason I am so onto people checking their local water report is because water is a huge part of the whole equation and I don't know what your water is like. Anyway that's just my two cents.. Good luck with your soil growing and I hope you get thing balanced out. https://en.wikipedia.org/wiki/Soil_pH

http://www.plantsgalore.com/care/soil/00-soils-Preparation-03-pH.htm This is a chart showing nutrient availability at different soil pH intervals. If you continue to water with pH adjusted water (~6.5) the soil pH will come down to where you want it to allow for nutrient uptake to be maximized and mitigate lockout. But your seedling is fine at a slightly more alkaline pH while you work your way down through waterings. I would have to disagree with Drumsnbuds in that pH is vital to nutrient availability in any and all media... including soil. Most of what causes the alkalinity of soils is carbonate based compounds in the media (CaCO3 and MgCO3) ‘lime’ which will be neutralized easily through watering with pH adjusted water.

Growing in soil you don’t need to adjust your water ph. I did my entire last grow without adjusting my nutrient solution once and she turned out great. If it’s true that you’re runoff off water is over 7 ph then you need to lower your soil ph not water.