Treated RO DI
- Thread starter macchicks
- Start date
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tizzo
Guest
Correct. Top off with RO/Di and that's it.
Some people think you need to buffer top off water, but you do not! Your tanks buffers are not lost in evap, only pure water, so you only replace pure water.
Some people think you need to buffer top off water, but you do not! Your tanks buffers are not lost in evap, only pure water, so you only replace pure water.
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tizzo
Guest
Well, thanks a lot there Jints. Ignorance "WAS" bliss. Now I gotta call my water supplier and see if that's added to my water. This would suck if it were.
I did a search for...
Chloramine and the reef aquarium by Randy Holmes-Farley and gathered a great deal of info on the matter...
I did a search for...
Chloramine and the reef aquarium by Randy Holmes-Farley and gathered a great deal of info on the matter...
rdm
Member
Originally Posted by Jints
http:///forum/post/2598584
Correct me if im wrong but your tap water may contain chloramine and depending on the amount....you may check with your vendor and purchase a upgraded chloramine filter. Call your local water company and ask if the water contains chloramine. Better to be safe than sorry.
Nothing that your water company add will be left after a pass though an RO/DI. Most RO/DI units produce lab grade water. The water is so pure it is not even recommended to drink, because it lacks trace elements and nutrients.
http:///forum/post/2598584
Correct me if im wrong but your tap water may contain chloramine and depending on the amount....you may check with your vendor and purchase a upgraded chloramine filter. Call your local water company and ask if the water contains chloramine. Better to be safe than sorry.
Nothing that your water company add will be left after a pass though an RO/DI. Most RO/DI units produce lab grade water. The water is so pure it is not even recommended to drink, because it lacks trace elements and nutrients.
jints
Member
Originally Posted by rdm
http:///forum/post/2598608
Nothing that your water company add will be left after a pass though an RO/DI. Most RO/DI units produce lab grade water. The water is so pure it is not even recommended to drink, because it lacks trace elements and nutrients.
That is true but in speaking with a few vendors that sell RO units...chloramine in high amounts will pass through the membrane unless a specific filter (chloramine filter) is in place. Every year or so your water company will "shock" the water lines to clear out the lines. Mind you the levels are low in areas but in some thay are very high. Im just saying its better to be safe and get an upgraded chloramine filter rather than lose your tank. I have called my water company and verified what my vendor was saying.
http:///forum/post/2598608
Nothing that your water company add will be left after a pass though an RO/DI. Most RO/DI units produce lab grade water. The water is so pure it is not even recommended to drink, because it lacks trace elements and nutrients.
That is true but in speaking with a few vendors that sell RO units...chloramine in high amounts will pass through the membrane unless a specific filter (chloramine filter) is in place. Every year or so your water company will "shock" the water lines to clear out the lines. Mind you the levels are low in areas but in some thay are very high. Im just saying its better to be safe and get an upgraded chloramine filter rather than lose your tank. I have called my water company and verified what my vendor was saying.
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tizzo
Guest
This is pulled from the article that will show up if you google the above... It's the only info I have found, but it's worth consideration...
There has been much debate over whether commercial RO/DI systems used by aquarists are actually removing chloramine in adequate quantity. The concern is not whether they can theoretically do so, but whether the actual units allow sufficient contact time between the water and the activated carbon for the units to do an adequate job.
I have been using a Spectrapure RO/DI system (CSP25DI) for years, and my water does contain chloramine, so naturally I was interested to know if it was up to the task.
In discussing the issue with Charles Mitsis, President of Spectrapure, he said that my water was among the most difficult to successfully remove chloramine from because the pH was high, and he was not sure that the unit was adequate. The reasons for being concerned were that:
1.Monochloramine is the most difficult of the three chloramine species to remove because it is small (allowing it to pass through a reverse osmosis membrane).
2. Monochloramine is the most chemically stable of the chloramine species, so is the hardest to break down (as on activated carbon).
3.Monochloramine predominates over the other forms in tap water at pH above 7 (dichloramine predominates at pH 4-7).
4.The pores of the activated carbon may become plugged with sediment over time, reducing the effectiveness of the carbon at breaking apart chloramine.
5.At high pH, the pores of the RO membrane can swell, resulting in poorer rejection of impurities.
There has been much debate over whether commercial RO/DI systems used by aquarists are actually removing chloramine in adequate quantity. The concern is not whether they can theoretically do so, but whether the actual units allow sufficient contact time between the water and the activated carbon for the units to do an adequate job.
I have been using a Spectrapure RO/DI system (CSP25DI) for years, and my water does contain chloramine, so naturally I was interested to know if it was up to the task.
In discussing the issue with Charles Mitsis, President of Spectrapure, he said that my water was among the most difficult to successfully remove chloramine from because the pH was high, and he was not sure that the unit was adequate. The reasons for being concerned were that:
1.Monochloramine is the most difficult of the three chloramine species to remove because it is small (allowing it to pass through a reverse osmosis membrane).
2. Monochloramine is the most chemically stable of the chloramine species, so is the hardest to break down (as on activated carbon).
3.Monochloramine predominates over the other forms in tap water at pH above 7 (dichloramine predominates at pH 4-7).
4.The pores of the activated carbon may become plugged with sediment over time, reducing the effectiveness of the carbon at breaking apart chloramine.
5.At high pH, the pores of the RO membrane can swell, resulting in poorer rejection of impurities.
jints
Member
Originally Posted by Tizzo
http:///forum/post/2598618
This is pulled from the article that will show up if you google the above... It's the only info I have found, but it's worth consideration...
good article
sounds familiar but that really went into detail. I was also told that your RO/DI unit will do the job but for how long is the question and that depends on the amount of chloramine in the water...or in his case....what KIND. Interesting. I would rather be safe.
By the way where the heck is Land o lakes Florida?
http:///forum/post/2598618
This is pulled from the article that will show up if you google the above... It's the only info I have found, but it's worth consideration...
good article
sounds familiar but that really went into detail. I was also told that your RO/DI unit will do the job but for how long is the question and that depends on the amount of chloramine in the water...or in his case....what KIND. Interesting. I would rather be safe.
By the way where the heck is Land o lakes Florida?
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tizzo
Guest
About 30 minutes north of Tampa. I think we are on an underground well system. There is no flouride in the water so I do not think anything is added either, but I will call to be sure.
Why, you in Florida?
Why, you in Florida?
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tizzo
Guest
Hmmm... The avatar? The city? are you familiar?
jints
Member
Originally Posted by Tizzo
http:///forum/post/2598652
Hmmm... The avatar? The city? are you familiar?
Born and raised in NYC
http:///forum/post/2598652
Hmmm... The avatar? The city? are you familiar?
Born and raised in NYC
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tizzo
Guest
So your really 25 posts new then??
Betcher happy with the last Super Bowl.
Betcher happy with the last Super Bowl.
jints
Member
Yea new to the site but not to the hobby. Im in the process of setting up a 120 (almost done). I had a 75 a few years ago and was introduced to the hobby by a neighbor who gave me bad advice and bad habits which I broke when I did my own researching.
Couldnt be happier in the last SB.
18-1
Couldnt be happier in the last SB.
18-1
