That's how I grow in Coco. Hydro & coco are similar with the 5.5 - 6.0 pH range but near the end of flower better to raise pH in Coco. But soil I keep between 6.0 - 6.8. Right now I'm doing a test run on 2 Blueberry plants in soil. 1 gets pH'd to 6.4 & the other doesn't get pH'd at all (I just take a reading & don't adjust the pH). They are both 5 weeks old & both are fine so far. Starting to look like there's no need to pH in a buffered soil to me.GHS recommends flushing at about week 5 and letting it dry out for at least a week. What I did after that was raise the pH of the water from 5.7 and slowly getting it up to 6.5 or so towards the end. Arjan's Strawberry Haze is a wonderful strain I would grow again.