Hello all, I am working on my first grow and have just started the seedlings on nutes. I made a windowfarms and popped my baby seedlings in them and all are fine but my biggest seedling. I am running a 200 ppm advanced nutrients perfect ph micro with a drop of strive in 2 liters distilled water. PH is at 5.8 but hovers up to 6.4 brought it back down with a couple drops of vinegar. I only flow water through the system once every day or so. Also, I am using 500w of broad spectrum led lights.. Any idea what I am doing wrong? All help is appreciated. Thanks in advance