Hey! I am new to TG and I am now on week 3of growing my first tower. My lettuce was looking beautiful until yesterday and my Romaine went limp and then today my Spring Leaf is as well. Nothing Changed I am watering every 15 min it is outside. I thought it may be my water level so I added more yesterday and my pH is at a 6. any clue to why my lettuce might be wilting it is breaking my heart a little.