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Re: [APD] CO2 drop checker with stirrer

I have an 80+ pound golden retriever who has graciously accepted the  
job of shaking the "drop checker".  At least twice a day he saunters  
past the aquarium, giving the whole tank a nice shaking.  I attribute  
the success I have had with this device largely to that dog.

Vaughn H.

On Oct 18, 2006, at 11:26 PM, Daniel Larsson wrote:

> Stuart Halliday wrote:
>> Won't work.
>> You'd need a calibrated light source for any accuracy over time.
>> Nice try though.
> As you see I plot hue-changes, thus all is needed is a stable light
> source.
> Also, a calibration white-spot would be easy to add (but not needed).
> But then again, I'm not after ppms or any other figure. Just be able
> to easier see how the colors change over time.
> Vaughn, a good stirrer I guess would be to fasten one end of a
> stick on an air-pump and the other end on the CO2-test?
> Shaken, not stirred. 8)
> // Daniel,
> http://www.defblog.se

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