Picture posting is enabled for all :)
However - if they are like a lawn in the tray, maybe they should be pri***d out into something else at wider spacing?
I seem to be having trouble with leeks already. Keep sowing trays of them and most of the first bunch keeled over - damping off?.
Could they be drying out?Looking at a leek seedling you wouldn't expect them to need much water, however, I've found that leek seedlings are better suited to quite a damp medium.
as soon as they get the grass leaves (The Flat ones) and the plant is about 8or9inch long I dibble a hole, put a pinch of superphosphate in the bottom, drop leek in and fill hole with water ..