Leaf Problem

Hey Guys, having an issue here maybe someone can help, Im using fox farm ocean forest soil, general organics (General Hydro) bio thrive line (veg,bloom,root,calmag,seaweed), the instructions say dont worry about adjusting ph, 600 watt hps, and HO T5 Florescent. Temp below 80 around 78 degrees...

Thanks
Manny