I have 6 seedlings growing with 4 being at least 5-6 weeks old, of those 4 only 1 seems to be semi-normal. The other 3, of the 5-6 weeks old seedlings, seem to be doing terrible. Of the 6 in total there are 2 younger seedlings mixed in with the older ones, maybe 3-4.5 weeks old, which seem to be...