thanks for all the feedback, will start reading up asap and maybe try the posted recipe or one of them in the meantime.
Regarding the rice hulls perlite thing:
I doubt aeration is an issue. I am using fabric pots and I used 1 additional part of buckwheat hulls in the soil mix of my previous 2 rounds.
The water drained very well and continues to do so now that I replaced 1 part of buckwheat hulls in the recipe with EWC.
The soil is noticeably more compact but it still drains very, very well.
I cannot recommend the buckwheat hulls enough so far, the only drawback (and I just heard of it) seems to be that they leech nitrogen from the soil.
I didn't know that so I couldn't compensate for it. My next soil mix will simply get an extra 1/2 cup or so of bloodmeal or maybe even 1 more part of EWC, let's see.
Regarding the fulvic/humic acid stuff, I hope I will find those infos on microbeman's site or the links that Weird posted (nice to see you pop up my man, have you considered blessing the world with some Bubblegum seeds?