medic grower
Tha Kushy Padawan
The closer the Better is the old Rule for Hps in Flower..... does your fan blow on that particular plant with the weird Leafes??? I had it several times that the Airflow caused that on Youngsters over here. Also ph runoff of 5 isnt that good as the others already mentioned. If u need a quick and easy solution try Baking Soda with the Feedings it should up the Ph.