Roots organic elemental additive in FF OF soil?

Hello! I would say yes, but in my opinion the best thing to do is to use an irrigation water set at 6.5, this way you will gradually bring down the pH of the soil until it stabilizes :) i used pH down from general hydroponic because i had a tap water of 7.8ph, now fortunately tap water Is 7.3 (i don't know why, probably some changes in the waterworks or sewage system , anyway i let the water rest for 24-48hrs before use, to let the Cl evaporate and have a 7ph. With ferts It slow down to 6.3-5