Just curious how yall get your supply of distilled water for those running FLA?
I have got a roof top solar still I have been thinking of hooking up as these rolls can get thirsty!
			
			
			
				Russ;
I used filtered [coffee filter] rain water and it seemed fine. I never trusted the store bought jugs of distilled water. Big difference between ruining your steam iron and a ton of batteries.
I read that rain is not actually pure distilled and may have dust [why I filtered] in it. Not roof runoff but left clean buckets out when it rained 
So your mileage may vary, do not attempt at home , etc. 
Tom
			
			
			
				I don't  have a good way to store acid rain water through the summer, and be able to keep it fresh, so I  go to the local mom & pop water store and buy DI water.
My NiFe batteries go through about 9 gal monthly.  I bought a TDS meter and it's always <5 or mostly unreadable. 
I would not trust the coin-op water machines.
			
			
			
				Look for Distilled and De-ionized in the 4 quart/4liter jugs...  double treated
			
			
			
				I'm using a pentair reverse osmosis.
model# ro 2600.
I removed the last stage on it and replaced it with a de-ionization cartridge.
been doing this since 2008....
			
			
			
				The distilled water I get at the moment is about $1.50 for 2 liters.
I can make my own by running rain water through my 20 reflux still!
Bit expensive with the power it uses to heat the water.
I think I might give the rain water and filtering a go as it is starting to storm here the last few days!
The storm water would be high in nitrogen as is most of the rain from electrical storms.
If I leave it stand outside for a day or so the nitrogen will dissipate.
			
			
			
				Maybe use a solar still?
Pretty simple and no fuel cost.
Just thought of that.
Could be quite simple like the survival still with a pebble on a sheet of plastic over a reservoir of water or damp earth and  distilled water drips into a container.
Like this:
https://en.wikipedia.org/wiki/Solar_still (https://en.wikipedia.org/wiki/Solar_still)
Only use a funnel and tubing to collect the distilled water outside the still itself. 
Made big enough it could produce pretty pure distilled water.
Just an early first cup of coffee idea.
Tom  
			
			
			
				I have  2 x fcube solar stills here for emergency filtration of dam water for drinking purposes.
They make 20 liters each (40 liters total) of pure clean water a day in summer so I will give them a burst firstly as the storm rain is
unreliable at the best.