I have also worked with bioreactors. Sounds like you have made some great progress. Just a couple thoughts:

1) there are plenty of other niches for microbe production that could possibly use the same technology. I am not suggesting you switch now, but something to keep in mind for the future. In my opinion, the current standard processes for working with bioreactors are slow and manual. I think there is a lot of room for efficiency improvements but it is rarely worth it for individual companies to make those investments.

2) Is all of the growth happening in a single bioreactor or do you have multiple sized bioreactors for different stages? I don't have a scientific background and I'm trying to understand the standard practices better.

edit: fixed typos.