I watered them earlier with my 4/6 solution at ph 5.9. It was at 5.5ph two days ago but drifted up, wasn't sure if I should add more ph down at that point. Six hours later the one that looked good looks terrible, small brown spots on the leafs and they are all pointing up. So what gives. I poured 2 cups worth of solution through the cups the plants are in the same cups and I drained quite a bit. Did I over water? Or is it possible the nutes caused this issue?