Tyrion

The plant grows at fast speed with no issues. I keep defoliating once/twice a week and the foliage is always fast in growing back and branches too. I adapt LST daily to make sure light reaches all of the buds that are now clearly visible and more and less evenly distributed. I could not have the main one at the same height because it is too close to the border of the vase. I am not sure why the ph of the soil is around 7/7.5 while before watering i always regulate the ph to be 6.4/6.5 and the soil itself is 6.5 by default. What are the factors that increase the ph?