Eva Seeds Monster Strain

so ive been dealing with ph fluctuations. This was the monster strain that was a mono. It was being a pain from day 1. ive had my soil ph go up and down from 8 to 5.5 and i keep trying to keep it balanced. Has to do with my well water more than anything. seems to be solid and good enough genetics that it wants to thrive. Its my maintenance that seems to ne the issue more than the strain itself. It seems to be hot in the "p" and "k" nutrients. Ive been using flush to get nutrients out and the run off keeps testing about 6 ph. i'm hoping as it matures it will balance out. This could be a classic case of "over mothering". but given the other strains i have with same issue im inclined to think my well water is the issue.