Yeah! Get an EC meter for Sure! You will need it to see if you need more or less food in the cycle! All feed charts are just guidelines—- phenos, ph, medium, EC all play a factor! Start where you want and test PH, EC, runoff PH—- that tells the story of where your feed is and where it needs to be! Check out the guys at Athena.ag—- they have a very informative feed info with coco and jungle boys ✌️🏻💚🌿💨