Re: Co2 risk of contamination from brass fittings?

[Dragon Slayer]

it isn't going to leach anything out. it will corrode if you allow your
tank water to flow back into it so a good check valve is needed on your CO2
line just before the reactor.

kc

"John" > wrote in message
...
> Does anybody know if there is any risk of contamination from using non
> aquaria Co2 cylinder and regulator to feed my Calcium Reactor. I've used a
> cheap disposable Co2 'welding gas' cylinder, brass pressure regulator and
> brass needle valve. Works fine but now I'm thinking what if the copper
> leaches out of the brass and contaminates my tank.
>
> My set up cost a fraction of the equivalent aquaria supplies item, which
is
> more like medical grade equipment. Any advice welcome.
>
> John
>
>

[Pszemol]

I am trying to think how CO2 could react with copper
and I cannot figure it out... No danger from this side.
CO2, even if wet, creates to weak acid (H2CO3) to react
with metalic copper and migrate in a gas form to the water...
I would say it is perfectly safe, but maybe you should ask The Oracle ;-)
(I mean Mr. Boomer)

I would rather check how clean is the CO2 you use...

"John" > wrote in message ...
> Does anybody know if there is any risk of contamination from using non
> aquaria Co2 cylinder and regulator to feed my Calcium Reactor. I've used a
> cheap disposable Co2 'welding gas' cylinder, brass pressure regulator and
> brass needle valve. Works fine but now I'm thinking what if the copper
> leaches out of the brass and contaminates my tank.
>
> My set up cost a fraction of the equivalent aquaria supplies item, which is
> more like medical grade equipment. Any advice welcome.
>
> John
>
>

[CapFusion]

"Pszemol" > wrote in message
...
> I am trying to think how CO2 could react with copper
> and I cannot figure it out... No danger from this side.
> CO2, even if wet, creates to weak acid (H2CO3) to react
> with metalic copper and migrate in a gas form to the water...
> I would say it is perfectly safe, but maybe you should ask The Oracle ;-)
> (I mean Mr. Boomer)
>
> I would rather check how clean is the CO2 you use...
>

It seem like the "Oracle" is mising for some time now.

CapFusion,...

[Jimmy Chen]

> Does anybody know if there is any risk of contamination from using non
> aquaria Co2 cylinder and regulator to feed my Calcium Reactor.

The CO2 gas will not harm the fittings, but your SW will kill it within
days. So if your plan includes using them for water, then dont even think
about it.

jc