The TM bio-actif seems to get scummy if you let it circulate in the reservoir for too long. I'd be afraid to let 200g go scummy and waste the carbon dosing element as bacteria in the reservoir consume it. I could add UV I guess... Smaller batches (50-100g) seemed like a good idea.
I'm not worried about the actual AWC automation (aside from siphoning), more so the making actual sw automation. Some elaborate scale or hopper that adds salt to water, etc. That's an unwanted bit of automation for me.
When I am planning I may call you to come check it out and put in your 10 cents
