Looking pretty good so far dude... I've had many plants be fine with a PH of 5.5-6.. and also had plants that found it too acidic.. I agree with Mr. Weeds Autos... Sometimes shifting to a higher ph.. Ie 6.2 can really improve the overall vigor of certain strains. But ideally you want to fluctuate a bit. Cannabis plants absorb different nutrients better at different PHs.... Bouncing the ph between 5.5-6.5.