chlorine and chloramine filter

[bobl-2004]

I am considering an automatic watering system. Dose anyone have
filtering ideas to remove chlorine and chloramine (other than RO)?
Thanks

[NetMax]

<bobl-2004> wrote in message
...
> I am considering an automatic watering system. Dose anyone have
> filtering ideas to remove chlorine and chloramine (other than RO)?
> Thanks

Off the top of my head:
- Activated carbon (ie: Centaur carbon might be the best for this, but
any will do it). Uses low flow rates, but it's fast enough for an
automatic w/ch'er..

- The right frequency UV might break down the chloramine molecules (in
theory ;~). Needs relatively slow flow rates as well, but more than
sufficient for an automatic w/ch'er.

- Automatic dosing of sodium thiosulphate or other de-chlorinator.

- Aerated holding tank for about a week might work. Set up 2 holding
tanks near the ceiling of your fish room and alternate which you take
water from. If the aeration for a week or so, doesn't do it, then a few
squirts of de-chlor will finish it. This has the advantage of letting
you tweak water parameters off line (altering pH, gH, kH etc). You can
also add plant matter to these tank, so this will take care of the
ammonia which is released by the chloramine too.

NetMax

[bobl-2004]

On Sun, 07 Mar 2004 20:55:20 -0500, bobl-2004 wrote:
I was hoping to draw water off the cold water line and change 10% each
day. It looks like some form of automatic dosing will be most
practical. Thanks for the sugestions.

>I am considering an automatic watering system. Dose anyone have
>filtering ideas to remove chlorine and chloramine (other than RO)?
>Thanks

[bannor]

On Mon, 08 Mar 2004 05:28:40 GMT, nanoreef >
wrote:

>NetMax may have written:
>>
>> - Activated carbon
>>
>> - The right frequency UV might break down the chloramine molecules (in
>> theory
>
>The following web page states that chloramine removal requires
>speciallized UV. Also the page hints that activated charbon may not be
>particularly effective in removeing chloramine.
>
>http://www.aquionics.com/chlorineremoval.php
>
>Then again these guys look like they deal in "big" installations
>versus fish tanks.

Yeah, as in 'thousands of US dollars'.... I called them... systems are
too big and too expensive for 'home' use.

[NetMax]

I use activated carbon and it works like a charm. My application is
commercial, so I'm using a 2 cu.ft bed, and it has lasted over a year.
I'm sure it could be scaled down for a home set-up. There are chloramine
kits available to test its affectivity periodically.

A 10% daily change sounds a bit high. I do up to 30% daily on commercial
tanks with heavy fish-loads. On a home tank set-up with a normal
fish-load, I'd scale back to about 3.5 to 4 % a day (nominal) and up to
5% for more special applications. For most tanks, this is a drip system
running 24 hours a day. I think that carbon would work very well in a
drip system. You could even have a premix chamber where the chlorinated
water was pushed through the carbon several times before going to the
tank. If I was building a fish-room, that's what I would try.

Always good to contact your city to see what chloramine levels go to. We
are 1.5ppm nominal with 2.5ppm peaks in Ottawa.

NetMax

<bobl-2004> wrote in message
...
> On Sun, 07 Mar 2004 20:55:20 -0500, bobl-2004 wrote:
> I was hoping to draw water off the cold water line and change 10% each
> day. It looks like some form of automatic dosing will be most
> practical. Thanks for the sugestions.
>
> >I am considering an automatic watering system. Dose anyone have
> >filtering ideas to remove chlorine and chloramine (other than RO)?
> >Thanks
>

[bobl-2004]

It is a drip system that I was contemplating. There are some systems
described on the net that sound pretty straight forward. Our water
here in Kitchener is sometimes treated with chlorine, sometimes
chloramine. From your comments it sounds like you feel charcoal would
work without "dosing" if daily volumes were low enough. Thanks (again)
On Mon, 8 Mar 2004 21:37:51 -0500, "NetMax"
> wrote:

>I use activated carbon and it works like a charm. My application is
>commercial, so I'm using a 2 cu.ft bed, and it has lasted over a year.
>I'm sure it could be scaled down for a home set-up. There are chloramine
>kits available to test its affectivity periodically.
>
>A 10% daily change sounds a bit high. I do up to 30% daily on commercial
>tanks with heavy fish-loads. On a home tank set-up with a normal
>fish-load, I'd scale back to about 3.5 to 4 % a day (nominal) and up to
>5% for more special applications. For most tanks, this is a drip system
>running 24 hours a day. I think that carbon would work very well in a
>drip system. You could even have a premix chamber where the chlorinated
>water was pushed through the carbon several times before going to the
>tank. If I was building a fish-room, that's what I would try.
>
>Always good to contact your city to see what chloramine levels go to. We
>are 1.5ppm nominal with 2.5ppm peaks in Ottawa.
>
>NetMax
>
><bobl-2004> wrote in message
...
>> On Sun, 07 Mar 2004 20:55:20 -0500, bobl-2004 wrote:
>> I was hoping to draw water off the cold water line and change 10% each
>> day. It looks like some form of automatic dosing will be most
>> practical. Thanks for the sugestions.
>>
>> >I am considering an automatic watering system. Dose anyone have
>> >filtering ideas to remove chlorine and chloramine (other than RO)?
>> >Thanks
>>
>