Re: [APD] carbo plus units and kh

[Vaughn Hopkins <hoppycalif at yahoo_com>]

I don't have an opinion, but it would be pretty easy to test.  Take an 
equal length coil of each type of tubing.  Submerse it in water. 
Measure KH and Ph of water.  Cover top of water container.  Pressurize 
tubing with about 25 psi of CO2, allowing enough to flow out to purge 
air.  Wait a few hours and recheck KH and Ph.  Convert to ppm of CO2 in 
the water.  If there is a significant difference, and you want more 
concise information, repeat with better controlled conditions.
Vaughn H.

On Sunday, December 25, 2005, at 08:00 AM, Derek Parr wrote:

> We've been discussing on my local aquarium group list on how much more
> CO2 gas is lost using normal air tubing compared to that special "CO2"
> tubing they sell.
>     Any opinions on the matter?
>
> merry christmas
> -derek parr
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