RODI vs Distilled Water Maker

Trying the distilled water route doesn’t seem like a terrible idea. You may save some on water, since so much shouldn’t be wasted. You will certainly spend on electricity. I also have my doubts on the manufacturer’s claimed efficiency numbers. It would be annoying to refill constantly, and I’d be afraid that you’d eventually forget or not bother refilling, leading to not enough available distilled water when you need it. I think the quality of this unit probably isn’t the greatest - “real” distilled water makers cost $2Kish and up for a reason - so I wouldn’t expect a particularly long life.

Having said all that, making RODI isn’t a perfect option either.

I say give it a shot and report back in 3-6 months, but definitely report back whether it works beautifully or terribly. That way you can encourage/discourage others in the future appropriately. Thank you, in advance, from the community for your willingness to experiment and report results! Good luck.
 
You do you. Hard head leads to hard lessons.
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Those are all way expensive, and IMO much better options out there just with brs. Spectrapure is where you start getting fancy but you get your money's worth with their stuff.
 
You get 1,500 gallons out of carbon and sediment filter. DI resin depends on your water treatment facility's process but it will be at least 500 plus.... So definitely cheap than 18-24 cents a gallon. But, hey you got a great idea.
Di resin longevity depends on your source water, what pre-membrane cartridges you run, and the effectiveness of your membrane and it’s rejection rate.
 
I used a very similar device many years ago to produce drinking water when I was living in cheap apartments with questionable tap water. I did not use it for an aquarium and did not attempt to measure the purity. It seemed to work ok as far as I could tell by tasting the water, and I used it for two years until I moved without any issues other than occasionally needing to chip lime scale off the heating element etc. However I will comment that it released a significant amount of warm, moist air in the process. It was great in winter in upstate New York in cheap apartments with centrally controlled heating (i.e.always cold). However I would not have wanted to use it in Florida! I had to make sure to turn it off before I plugged in the vacuum cleaner or turned on the stove unless I wanted to trip the circuit breakers.
 
You forgot the cost of Amazon Prime. Go back and redo the math.
Prime is $139 a year. ($139 +$30)/1,500 gallons = 11 cents a gallon. Still cheaper and you are still wrong. And, probably a blast to hang out with...
 
Prime is $139 a year. ($139 +$30)/1,500 gallons = 11 cents a gallon. Still cheaper and you are still wrong. And, probably a blast to hang out with...

The filters you priced included everything needed for maintenance? Membranes etc?

Seems we are 7 cents apart at this moment.
 
Prime cost is averaged out for all your Amazon purchases during the year. Can’t just lump in the prime membership cost

You're right best to calculate out the actual shipping handling per filter, membrane, etc or packaged together if ordered at the same time from the same company without prime.

He forgot the tax go back and redo the math.
 

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