I'm a chemist and I also read Randy's posts for fun. Feels good to admit that to someone.Mine always hated it when we were poor, imagine that. But now we aren’t poor, she is a geologist with a masters in hydrology. So she now has more than a passing curiosity in the chemistry side particularly mineral consumption and relationships. She starts geeking out trying to explain things like why and how CO2 lowers ph. She reads Randy’s posts for fun. Here is the kicker. Ask here about the living stock and she does not care one bit. The stock, to her, are only necessary to have a box full of gravel and water in which chemical reactions take place. It’s very strange.