Re: Free C02 regulator

[Kris]

Sir Douglas Cook wrote:

>
> Quoted from the book:
> "C02 injection. In recent years some aquarists have used this process,
> whereby carbon dioxide is added (from a gas cylinder) to the aquarium, in
> order to promote plant growth. CO2 injection must be used with considerable
> care, if at all. Remember that high CO2 levels may reduce the oxygen uptake
> of the water and lead to a risk of hypoxia in the fish, especially if the
> aquarium is crowded and /or the fish include species with a high oxygen
> requirement. Some aquarists try to get round this problem by using
> additional aeration, but, while this will certainly increase the oxygen
> content and benefit the fish, it will at the same time drive off the carbon
> dioxide, making the CO2 injection a rather pointless exercise! CO2 injection
> should always be turned off at night - When the plants do not need it."

While I do not wish to enter into a debate with anyone
I think there is another important factor that has been missed
CO2 injection reduces ph
by turning on and off the injection system you may be causing ph swings
that could greatly harm your fish


Kris

[Bob Alston]

And you can't believe everything you read because it was written in a book.

So Sir, that is my opinion.

--
Bob Alston

bobalston9 AT aol DOT com
"Kris" > wrote in message
news:lcyqc.19952$0e6.13211@clgrps13...
> Sir Douglas Cook wrote:
>
> >
> > Quoted from the book:
> > "C02 injection. In recent years some aquarists have used this process,
> > whereby carbon dioxide is added (from a gas cylinder) to the aquarium,
in
> > order to promote plant growth. CO2 injection must be used with
considerable
> > care, if at all. Remember that high CO2 levels may reduce the oxygen
uptake
> > of the water and lead to a risk of hypoxia in the fish, especially if
the
> > aquarium is crowded and /or the fish include species with a high oxygen
> > requirement. Some aquarists try to get round this problem by using
> > additional aeration, but, while this will certainly increase the oxygen
> > content and benefit the fish, it will at the same time drive off the
carbon
> > dioxide, making the CO2 injection a rather pointless exercise! CO2
injection
> > should always be turned off at night - When the plants do not need it."
>
> While I do not wish to enter into a debate with anyone
> I think there is another important factor that has been missed
> CO2 injection reduces ph
> by turning on and off the injection system you may be causing ph swings
> that could greatly harm your fish
>
>
> Kris


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