Hello! First, thank you for any and all advice. Really appreciate it. We have quite have quite a few seedlings currently growing under a grow light. First pic is tomato plants. I think those are doing well. I see a few leaves turning yellow, but not many and the stems have strengthened since we started using a fan in the room. Second pic, carrots. These seem to be doing well, too. I am very new to this, so please let me know if you see anything I don't in the pics! Third picture is cucumbers. I am sad to say about 3 to 4 of those seedlings look like they have signs of damping(?) if that is the correct term. They were fine yesterday and today they have yellowed and fallen over. Do they need heat underneath? Fourth, kale. Some of the kale seedlings seem to be doing well, others have turned yellow, tan, purple and shriveled up. I assume that is not a good sign. Fifth and final, peppers. Growth seems slower. Some seedling leaves are darkening. Do they need more light, water, maybe heat mat?
Also, when do we thin? If necessary?
We are in southeastern Michigan and plan to transport to large pots. Temps are mostly high in 60's now and lows in upper 40's and low 50's. We were planning on waiting. Haven't taken them outdoors to harden off yet. Grow light is on about 16hrs, but realizing that is a bit too long and this week we are doing 12hrs. Fan blows on them a couple hours.
Appreciate any advice for this novice gardener