Finally got my pump and regulator. The reactor is up and running on a tub of water I'll use for a water change. I wanted to run it on the tub for a while so i can get an idea of the ph changes that are likely in my system. It seems to be working great, and it's really built. With the templates to cut flanges, etc, it doesn't look DIY, except for the few cosmetic screw ups....

Matt