I'm wondering if anyone is setup with an RO/DI that feeds right into the sump / tank for an ATO? It's a bit risky I know, but might be nice? I'm thinking of using a float valve on a container near the tank that is replenished by my RO/DI, and then another ATO system that then tops off the actual tank. But the two possible failures can either mean a still endless amount of RO/DI water into the tank, or a small flood (or both). Or I could just once in awhile open a valve to fill that first container near the tank, using the float valve as a temporary stop while I'm not watching, but not have it on 24/7. But if there's some very low risk way to connect my RO/DI straight to the tank, that would be nice. Maybe a combination of float valves, optical sensors, and solenoids?