Is there anyone else with tanks above 30 gallons in which you do not have an ATO (auto top off)? If so when you add water how much at a time do you add? What are your results? I have yet to get a lid that will aid in evaporation, and I'm losing about a gallon every 3 days. I do not have a rodi unit and won't have one for more than a year from now. Also I work second shift so I can't get bulk ro fresh water all in one shot due to LFS hours lol. I just want to know what some peoples routines are and how they work, what hasn't worked...