I've got a bunch of seedlings (5 wks old) that are bursting out of their 4" pots, but I only yesterday got my soil mixed up and I'm nervous about transplanting into it. Here's my mix:
30 gal base (equal parts peat, perlite, and compost)
3/4 c soil sweetener
9 c EWC
1 c bat guano
1 c fish...