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I was under the impression that rodi water cannot grow bacteria due to the absence of electrolytes. We're you referring to reverse osmosis water growing bacteria or are there specific strains that can actually grow in rodi water?
Not only should bacteria technically not be able to survive (maybe rare extremophiles can), but it would need to break the laws of physics in order to grow.
If anybody has any further information on this please let us know
I've presented the reasons this is not an appropriate explanation of bacteria in RO/DI water.
Your rules of physics hyperbole is also incorrect as RO/DI certainly has ions in it.
This isn't what I was requesting at all. Im not familiar with the literature on bacterial species that can survive in such conditions and was exploring curiosity.
If you can't explain something properly then please don't call it hyperbole. I have a great deal of respect and appreciation for you and taking your time to help us out on these forums but things still require evidence. The amount of force exerted on a cell by rodi water is immense, and the energy required to maintain homeostasis in such an environment equally as great. So, in an environment of sparse nutrition where is the energy coming from? Let alone any energy and physical mass needed for replication.
Maybe they could form endospores and forgo some of the energy requirements for survival, but in either case reproduction would seem like a physical impossibility. Also, maybe this is hyperbole, but simply stating that it is does not make it such.
Sorry if you did not mean that the laws of physics statement as hyperbole. It could be applied to any question at Reef2Reef where the answer is no, and consequently seems to be hyperbole to me.
Instead of debating whether bacteria can "grow" in RO/DI, let's look at whether pathogenic bacteria may be present in RO/Di, since that is the pertinent question and the one that makes RO/DI undrinkable, IMO, if it is not properly sanitized.
Let's start with whether pathogenic bacteria can live in reverse osmosis water, upstream of the DI. According to this paper, bacteria can grow in water purified by reverse osmosis:
Assessment of the extent of bacterial growth in reverse osmosis system for improving drinking water quality.
Assessment of the extent of bacterial growth in reverse osmosis system for improving drinking water quality - PubMed
This study was carried out to assess reverse osmosis (RO) treatment efficacy of drinking water in terms of biological stability in the distribution system. Two flat-sheet RO membranes were used in this study. Experiments were designed to investigate the growth of biofilm and bulk phase bacteria...www.ncbi.nlm.nih.gov
"More than 99% of bacterial cells in the tap water was retained by the RO membranes, leaving <50 cells/mL in the permeate water. In spite of the low nutrient contents and few cells in the RO permeates, monitoring of the model distribution systems receiving the RO permeates showed that remarkable biofilm accumulation and bulk cell growth occurred in the RO permeate water. "
So then one has the potential for bacteria to grow between the RO membrane and the DI, potentially releasing cells and colonies into the water. The only thing left to remove them is the DI. Does it?
The CDC says no:
Water Use in Dialysis | Dialysis Safety | CDC
Guidelines and recommendations for dialysis water quality and dialysate.www.cdc.gov
"Deionization (DI) unit does not remove or destroy bacteria, so if DI is being used as the main water treatment (rather than RO), you will need a submicron or endotoxin/ultrafilter downstream of the DI unit. "
Lennentech, a company that makes a lot of commercial water purification technologies, also says no to DI killing bacteria:
Deionized - Demineralized Water - Lenntech
Deionized, demineralized and distilled water and measuring of the puritywww.lenntech.com
"Deionization: Process utilizing special-manufactured ion exchange resins which remove ionised salts from water. Can theoretically remove 100 % of salts. Deionization typically does not remove organics, virus or bacteria except through “accidental” trapping in the resin and specially made strong base anion resins which will remove gram-negative bacteria."
Consequently, there is the potential for bacteria to grow in RO water, break loose and pass through the DI, into a person drinking it.
Likely not a common event, but uncommon things happen when tried millions of times.
Good read!!
We have well water, so no chlorine or any kind of sanitizers. To me our water tastes pretty good, although a little earthy after in rains real good. My wife prefers distilled or RO. May need to look into at least sanitizing my RO unit.
Are all filters created equal? Filters from BRS for example. Or do I need to buy filters for my RO from someone that’s in the water business.
It’s safe for a short time as you won’t get essential nutrients in the body so don’t drink it oftenWould it be unhealthy because it's filtered too much?
Last question...can you use this in an iron since all the metals are filtered out.
I wanna make coffee with it or use in baby bottles.
We too have well water here in Montana. A 400 ft well at that. Our water has tons of calcium in it so I thought my corals would love it, and they did. Then one day my wife said, water tastes a little funny today. Not paying any attention I went ahead and did a water change the next day. The following day, all the fish were dead. Since then, no tap water for anything. Not sure what was in it all of a sudden but I started going to the store for RO water until I could get a BRS 7 stage RODI unit hooked up.Good read!!
We have well water, so no chlorine or any kind of sanitizers. To me our water tastes pretty good, although a little earthy after in rains real good. My wife prefers distilled or RO. May need to look into at least sanitizing my RO unit.
Are all filters created equal? Filters from BRS for example. Or do I need to buy filters for my RO from someone that’s in the water business.
I hooked my RODI system to my ice maker and sink dispenser and have been drinking it for about 4years. No issues. Your body has an immune system for a reason. Let it work for you and keep it strong.
Coffee beans are seeds releasing not only coffein but also minerals like potassium stored in the seeds. Maybe you are drinking your coffee with milk and /or sugar, which both adds further minerals or osmotically active substance respectively.So can I keeping using my RODI water to make coffee in the morning or not?
It is perfectly safe unless you are not eating and it is your only source of fluid.
It is perfectly safe unless you are not eating and it is your only source of fluid.
I say it’s safe to drink Rodi water.
There’s literally a mass marketed product called zerowater that uses ion exchange resin to make zero tds water for you to drink. If it was unsafe the fda would have stepped in or we would be seeing millions of people with issues.
Disclaimer: I personally drink the water that comes out of the RO section before it hits the resin. I just don’t see the need to drink 0 tds pure water or waste money making it for drinking.