What the hell is cannabis fert?!?!?! Please don't confuse people. You want people going to hydro stores asking for cannabis fert?!?! And what's wrong with peat? Anyway when you go to the hydro store get yourself some fox farm soil and fox farm nutrients. You can go@gle the fox farm feeding schedule and follow that to a T and you will have good luck. Also try to plant plants so that they are at the top of the planter. When they are down deep in the cups the crown of the plant does not get enough airflow. As far as Ph goes get yourself a Ph control kit by General Hydro or something similiar. Ph up and down will be the best way for you to get started with balancing your Ph to 6.5-6.8. Good Luck and read as much of this site as you can!