2 fertilizer questions: probiotics and I3B

[SiohWenoeht]

1: I received a new (to me) fertilizer for Christmas and it includes several different ecto and Endo mycorrhizae as well as probiotics, humic acid on top of being 5-5-5. I've read several posts regarding the probiotics and mycorrhizae but have no idea about the concentration I should dilute this to if I use on orchids. Picks included of label.

2: also received a root stimulator that is 0.0004% I3B and 4-10-3. Should this be weakened based on the I3B or the fertilizer content for use on orchids? I have only phals at this point.

Thanks in advance!