Thanks for the information. Do you think I can direct the line into a large container instead of the drum? What happens when the drum is empty? No more water to drink, etc? The reason I ask is because after I fill up couple gallons of water from the sink, the drum becomes empty and the flow is greatly reduced.
Also, since I'm going to do a 50% water change soon, should I just fill the tank with pure r/o water since the remaining is hard tap water? Then the next week that I do a water change, I will just have to fill up with 50/50 water?