Re: [APD] phosphates and co2 table

[Vaughn Hopkins <hoppycalif at yahoo_com>]

KH is actually a measurement of alkalinity, not a measurement of 
carbonates.  If the alkalinity  in the water is all carbonates the 
PH/KH/CO2 table works fine, but if not, it doesn't.  There is no easy 
way to measure the carbonates in the water other than KH.  That's why 
the best way to "measure" CO2 is to watch the fish for signs of 
distress, if you are injecting as much CO2 as  you can without 
bothering the fish, that is the right amount.  (In my opinion)

Vaughn H.

On Monday, March 6, 2006, at 10:16 PM, Jerry Baker wrote:

> Jerry Baker wrote:
>> My understanding is that the phosphate interferes with the reaction of
>> CO2 and water.
>
> I should have said interferes with KH readings. In your case KH tests
> will show a higher value than you actually have because they will be
> measuring the phosphate also.
>
> -- 
> Jerry Baker
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