GMSgrowsanswered grow question 4 years ago Lower older leaves is nothing to worry about. Your girl looks pretty happy to me. I would say 495 ppm if your using 5 scale is close to 1.0ec. To me that seems low but things look ok with your girl. Your getting near the point, when the roots engulf the fabric planter, will make you need more water so you dont leave dry spots in the root zone that creates little brown spots half way and near the top of the plant. Make sure you water to you have a lot of runoff. Cheers