In case anyone is interested in how this was resolved, and didn’t read my other post on the support forum.
I ended up pulling the hose from the reservoir and swapping ends so the it pumped in the correct direction. The hose that was originally in the reservoir was close to being too short, but I was able to get it situated so the hose reaches the bottom of the nute bottle.
@Stephen did a test pump and we were able to verify that it was now pumping in the correct direction.
