Lettuces: help please

[vegnovice10]

Planted more lettuces, lambs lettuce which is just sprouting through and all the year round lettuce which has produced seedlings. My query is do I need to feed them and if so what with?

I have had to move the seedlings into the greenhouse (unheated) as have given up outside as they just get eaten within a couple of days of growing a few centimetres tall. I've had to reuse compost as had run out so guess I'll need to feed them. The compost had grown spuds but as they were in a grow bag and hadn't gone into a lot of the compost hoped it would be ok.

thanks

[fergi]

just pricked my last ones out , they went into an old grow bag that had tomatoes in. They will get one feed of miracle grow to get them going then that's it. Let me know.how you get on