ro filter

[smokinreefer]

hmmm...

OK, so we can agree that ro/di water will strip minerals or ions from whatever they are in contact with...

but seriously, how fast do you think it reacts...do you really think that if you pour some pure water on metal it will saturate the water instantly??

even so, how much water does a person drink at a time...1 glass??...and how long does it take to consume that glass??

lets say i chug a full glass of ro/di water...first, the water will not be absorbed into my system instantaneously...it will surely reach my stomach before it has time to undergo any significant chemical reaction. once it reaches my stomach it will have a plethora(sp.?) of nutrients and organics to leach from. no?

[Marianne]

Rain water, unless you live in a polluted city, is without ions. (Crap can be picked up in the air during precipatation (crap=non technical word). The earth minerals that are dissolved in water give it it's ions. The only concern should be if the resins are "FOOD GRADE" they may not be.

All the resin we use are. Everything we use is.

Ultra pure water would not have a cumlative effect, like cigs.

[Troy F]

Originally Posted by Marianne

Rain water, unless you live in a polluted city, is without ions.

I doubt me that there is very many places in the world that have pure rainwater. Most of the world is polluted.

[reefburnaby]

Hi,

DI water is very pure water, but DI water doesn't like to be in this state...it likes to have ions dissolve in it. If you drink DI water, it will try to extract ions (trace metals) from you. This is fine as long as you eat enough to replace these metals.

As an extreme example, if you were on a hunger strike, I would not drink DI water. Since you are not eating anything, the DI water will eventually remove enough trace elements to give you health problems.

- Victor.

[Canadian]

You guys keep saying things like "...DI water will eventually remove enough trace elements to give you health problems." without providing any proof. It's absolutely insane. The water you consume does not simply pass through your excretory system without being filtered. Even if, for instance, DI water was aggressive enough to strip as much Ca as possible from your body after you consumed it, the reduced Ca concentration in your plasma would trigger the secretion of parathyroid hormone which would prompt the stimulation of the formation of calcitrol to increase intestinal absorption, and cause your kidneys to increase Ca reabsorption, thus leading to decreased Ca excretion. Likewise, similar response mechanisms occur for controlling the excretion of other ions such as K, Na, etc. It's called homeostasis - it's a wonderful thing people.
It's not as if your body is a cylindrical piece of pipe through which water flows. "Stripping" of ions early in the process of ingesting DI water would trigger the reabsorption of those ions in the kidneys and other organs before they were excreted. A piece of pipe or a semiconductor kinda of lack those physiological components and mechanisms don't they?

[Aquattro]

Andrew, thank you for introducing science into this topic, coupled with some common sense!!

[StirCrazy]

Thank you Andrew, I was going to post last night about this but from the "water making and drinking water quality" point of view but your post introduced medical facts to shut down the "Old Wifes Tails" and is probable more effectivve than me trying to explain that demineralizing or DI (same thing) is used all over the world for drinking water in countries whare water would otherwise be undrinkable.

I think Marianne had a good point also about making sure the resins you are using are FOOD GRADE, after all with everyone trying to be concenious (spelling?) in this hobby, why would you use any water that is not safe to drink yourself. If the resins are not food grade...what by products are they leaving behind? and how will they afffect our fish?

I think it was said to me once "you spent thousands of bucks on sand and rock.. don't risk your fish over saving 20.00" or something along the same lines as that

Steve

[smokinreefer]

btw...where is my RO??

[DJ88]

Rain water, unless you live in a polluted city

What is concidered polluted?

If you look back a few years before sattelite imagery and high tech gadgets, the US was able to tell that the USSR was testing atomic weapons by air samples alone. Go up into the arctic or down to the antarctic(or a glacier for that matter), when cores are taken of ice structures until you get deep enough to get past the industrial age there isn't "pure" ice. It is contaminated with all the crap floating around the earth. I highly doubt that you can go anywhere on this planet and get pure rainwater. Not with progress.

Victor,

the DI water will eventually remove enough trace elements to give you health problems.

And where will they go? How will they leave your body? Through something else other than your digestive tract and urinary system? Evaporation? Your body is designed to remove things that it conciders essential to survivial. If it was removed or stripped in whatever fashion don't you think your body would re-absorb it again in your digestive tract or urinary system? However IF and I stress IF the water was able to remove enough to cause problems don't you think someone who tests things like this would have said something and these cartridges would be labelled and expressly marked NOT FOR HUMAN CONSUMPTION.. DANGER!!!!

Most importantly to me.. if DI was able to remove enough of these elements necessary for you to live, you have more important things to worry about. Stop drinking coke with every "meal" and forget eating cheetos and caramilks all day long and eat properly. If you are worried about DI doing this to you. It's time to rethink your eating habits.

Andrew,

Cudos.. Good job.

You know it won't make a whit of a difference tho. The wives tale is so much more fun to perpetuate. It creates such a gruesome image. :twisted: :shock: People drinking DI water and actually being taken apart and stripped down into their basic elements. In time they will just fall apart. Or else the water will cause them to mummify as it has removed everything essential for us to survive. OH MY! :shock: :shock:

too funny.. lol

[pocilipora]

I did use DI but I took it off. No ill effects so far that I can see. Now its just RO water.