So interesting I thought... I do have the zero water filter the big one for the fridge. I put the new filter in 2 weeks ago when we first got here. We have been using for drinking water for 3 people. About 400-500 ounces between the 3 of us a day. I decided to test it and it is still at a 000 PPM. Since I have been using tap water for my little evap cooler that I have set up on the cage I am going to switch to the zero water for the ice cubes and water that goes into the unit. Reduce the potential for issues to the unit. But I really thought it was interesting that after so much use it was still at a 000 PPM after 2 weeks.
I wont be using it for the mistking or the fogger. I am using probably 4 gallons every 2 days right now and I am still playing with my misting lengths since I am living in a totally different environment than before. It takes too long to sit and fill the gallon bottles with it. Plus I do not want to ruin the filter too quickly because they are expensive.