Soil PH too high!!

Soil PH is between 8.0 - 7.5 plant im growing loves 6.0
how would i make the PH Netural to 6.0?
im not a noob at this i know its the water but what i dont get is how do i make the soil netural?
do i put jus netural water (6.0) in the soil?
or should it be a bit acidic (4.0 - 3.5)? to counter act the akalinity it the soil?


thanks for taking the time to read my post have a good day.
 
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