Poll....Do you Declorinate your RODI Water?

[pilot_bell777]

Just wondering, have hears both sides of the fence.

[Ram_Puppy]

why would anyone do this? the very fact that is has been run through an RODI system has allready de-chlorinated.

Not only that, some of the chemicals in commercially available dechlorinators do not react will with hyper-modern kick butt filter media like Purigen.

[Magneto]

I could be off my rocker here, but RO/DI filter prestages are there in part to declorinate. Chlorine would destroy the membrane IIRC.

[pilot_bell777]

I've never declorinated mine either but I heard some people talking about it so I figured I would ask to see if I was off my rocker! LOL

[jroescher]

I don't know what they use in Austin, but someone should know or call the water department. There is an issue with RO units when Chloramine is used. You have to use a special filter, or maybe a different membrane because Chloramine will destroy it. There is an article on AquaFX site about it. I read about it at other filter sites also.

[Magneto]

Again been a while since I paid that much attention to chloramine/chlorine. Had my RO setup for quite some time and all. But IIRC Chloramine is a product of chlorinated water at a certain temp. Hot water has more chloramine in it. As the temp goes lower the reaction reverses and it will reform back to chlorine. Hence, hook your RO/DI up to cold water pipe..

[obtusewit]

Sorry to burst your bubble there MAg...but Chloramine is a different compound than Chlorine... about 80% of municiple water systems use Chloramine now...it is cheaper and doesn't degrade like Chlorine.. Chlorine migrates and biodegrades over time...Chloramine does not... both will kill a membrane and the Activated charcoal filter elements remove both..if you don't change the AC filter before they fill up with bad chems, your membrane will surely die an early death due to bio and precipitate fouling. COntrary to popular belief, chlorine does not react with the membrane...it just increases fouling, especially from hard water.. flushing once a week is important to maintain an RO system. If you have a water softner ahead of your RO/DI unit, it will great increase the life of the membrane....

techy stuff here

http://www.gewater.com/pdf/TechNotes...20Analysis.pdf

[alton]

I have a rural water supply and a few year ago I purchased a small pool for the kids. I added chlorine like the instructions said and my kids swim wear bleached so I checked my chlorine from the tap 4 ppm. RO only takes out 2 ppm per Kent Marine. How many times are we overdosed from the water supply companies? Better to be safe then sorry. Only 1 or 2 companies make chloromine remover. The others just break it up? I use the Chloromine Blasters with a double canister to help with this problem and still add drops. I haven't lost a fish since I started this practice and also not using a garden hose. As far as DI units 100 to 200 gals is all they last on my water system.

[Polkster13]

Chlorine can be removed from the water via agitation. Chloramine cannot be removed from the water except though absorbtion using carbon filteration. Chloramine removers do NOT remove the chloramine but locks it up into a different chemical compound that is non toxic to fish. What happens is it then becomes fertalizer in your tank. You need to remove it using carbon before adding the water to your tank. When my water supplier switched from Chlorine to Chloramine, I added an AquaFX RO unit using the NHCL2 blaster and was so impressed with the unit I became an AquaFX dealer.