I have te Aqua Safe unit with pressure tank. I found you would get a couple of gallons everytime the system is charged. Without the tank you would have to wait a while to fill a pail, and if you remeber to turn it off is another story. I have made so many floods in my basement filling jugs and forgetting about it, and this is with the pressure tank. I ended up ordering 2 more pressure tanks from aqua safe to make sure I will have close to 10 gallons anytime I need it.
I am also building an electrical auto top off with a solenoid to hold back water pressure and prevent leak by, common with other auto top off devices....
Also, the ultra pure water from DI is too pure to be drinking water. I am guilty as I use it right now too, however the "ultra-pure" water will actually absorb minerals from your body when consumed. I will fix this by seperating the DI unit from the RO unit and plumb my drinking water line directly from the RO. Another issue with the Aqua Safe DI unit is that water flow channels and I notice that the DI resin does not change color evenly. This will waste resin, and you will be throwing it out prematurely(expensive stuff). I am going to fix this by mounting the unit vertically so the water will flow from bottom to top like other "Lab Grade" DI units.
I still wouldn't hesitate buying the Aqua-Safe unit. It is still the best buy out there, I just think there are some improvements in upgrades that can be made.
Sorry about the book, and I hope this helps.
JMO
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