OK SO, I HAVE BEEN GROWING FOR A FEW YEARS NOW. I HAVE A 600 WATT LIGHT SYSTEM. I USUALLY HAVE 5 PLANTS IN THE SPACE, I USE FOX FARM NUTES AS WELL AS THE SOIL (OCEAN FOREST). I WOULD LIKE TO START DOING THE PPM IN MY GROW BUT ALWAYS SCARED I WAS GOING TO RUIN MY GROW. NOW I WOULD LIKE TO...