My indoor tomato seedlings (four varieties, 2 heirloom, same conditions
as last year) started really slowly this year and now 4 weeks after
germination seem to be slowly wilting--bottom leaves first, no spots or
colour change, not falling over. Any ideas re what I can do? I used
potting soil--is that bad? Would my storebought manure or homemade
compost help?

Thanks,

Sarah