So would you have one dozer pulling water from the tank out at a given rate and the other one matching its rate replacing it?So I did some mathing. If I wanted to end up with a 100% wc a week, it would be under a cup of water a day at full volume (not accounting for displacement - I haven't filled the tank and measured actual volume yet.) I think I may order the dosers to arrive via amazon tomorrow - then run some tests with tap water under supervision. If I don't trust it I can easily return the doser, no harm no foul. I'll obviously need to do regular recalibrations and maintain the device to even consider trusting it longterm.