choosing fertilizers - fir bark treatment

[shaelyn]

hi all,

I don't have any fertilizer yet for my orchids, and I've been reading up on what would be best. Ive been reading that high nitrogen is best for orchids in fir bark (such as mine are.) I'm looking at Jack's fertilizers right now, so I see 30-10-10 formula recommended.
I've also glanced at the bloom boosters...which are 10-30-20...eek, low nitrogen!
so I guess what I'm wondering is, when I'm ready to use a bloom booster...should I use the low-nitrogen stuff? should I mix it with my regular? if I did a half-and-half solution, that'd end up being a 20-20-15 ratio...right? 20-20-20 is all-purpose...would I be better off just getting the all-purpose as a substitute instead, when I want to use a bloom booster? is there something I'm missing, or is my mind running wild with stuff that's over my head right now? LOL