This is my first time vegetable gardening. About 3 weeks ago I started some seedlings indoors. Broccoli kale lettuce tomato and cucumbers. Everything seemed to be going well until a few days ago. About half of my to kale and broccoli are dying (or what seems like dying?) most are turning gray and one is turning a yellow. They are in 1-1/2" plastic starting trays. I think I over watered in the beginning but they seemed to be fine. I have been bottom watering for the past week and a half. I don't think I am under or over watering at this point. The tomatoes and cucumbers seem just fine. Couple brown dots on a couple cucumber plants but they look very healthy otherwise. This started about 4-5 days ago and has gotten worse every day. I should add I used some Phc fertilizer in them about a week ago. Did I jump the gun? Could this be why they are dying? If they die is it to late to direct sow in some seeds outside? Help!