So, I saw today that Spike brewing came out with a 1.5” TC sight glass for the Flex line of fermenters. I am trying to understand the use of a sight glass when there isn’t a bottom port. Would you just put it on one of the side ports and have a representation of what is going on in the rest of the fermenter? (I know that sounds obvious, it is a SIGHT glass.) They talk about using it for harvesting yeast, but I can’t see that working. Am I missing something? Or is it just a simple add on to watch it ferment since it’s a stainless fermenter?