I use my condensate too, been using it for years.... It’s a lot of water and our well isn’t the greatest so it gets used. I bought a filter and uv light to treat it but haven’t gotten around to hooking it up. Mine gravity feeds back to my res room thru pvc pipe and it’s ALWAYS flowing so there’s nothing stagnant about it. If I stick my finger in the end of the pipe it is a little slimy, not green just slimy, pretty sure it’s jist algae tho. Between runs I change the air filters and clean my handler and dh coils with a non toxic coil cleaner then I pour h202 then vinegar thru the piping and let it rinse out for a few days or so. The water tests about 3-6ppm on a good Hanna meter. That link to the quest article was great thanks to whoever posted that, definitely helped me justify what I’m doing haha