Seedling trouble

[420 carson]

Seedlings are forming brown spots on bottom leaves heading up. They were in small containers with no drainage holes for a week. How can I fix it

 

[insidagain]

https://www.rollitup.org/t/how-to-grow-marijuana.937/

 

[ISK]

Seedlings are forming brown spots on bottom leaves heading up. They were in small containers with no drainage holes for a week. How can I fix it

maybe you could consider adding drainage holes

 

[Flash63]

When you water or feed Drain To Waste 10-15%....