Natural organic fertilizers (liquid earthworm humus)

[Cach26]

I have a dilemma regarding the fertilization of my orchids, I love growing them, but honestly where I live they do not sell special fertilizers for orchids (There is but generic triple 20, without micronutrients
). I have searched for information on organic fertilizers that supplement macro and micronutrients and I found that worm humus is the best in general for plants, but I don't know how it reacts with orchids (if it contains urea or not...), also a grower told me I comment that I prefer to avoid it because it "causes fungus", but nothing is conclusive, I remember reading an experiment they did on phaleanopsis using 10ml of liquid humus x lt of water per week, and it was a complete success. In addition, a nearby university fertilizes all its crops (including orchids) with 30ml of liquid humus x lt of water every 2 weeks. What do you think?