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[APD] CO2 drop checker
I believe Vaughn Hopkins wrote this email section below:
> So, these devices separate the measurement of CO2 in the tank water
> from any parameter of the tank water except the amount of CO2 in the
> tank water. That is a major step towards accurate CO2 measurement.
> Just because it is simple, non-electronic, and an old device, does
> not keep this from being a great idea! (It isn't my idea,
> incidentally, although I wish it were. All I have done is recognize
> why it works, try it out, and publicize it.)
I got mine a month ago from a UK retailer and it had the worse sort of
instructions included. ie a colour chart and nothing else.
Aquili Permanent C02 test.
Glass phial looks nice however and is quite cheap.
So I'm finding this article very useful. Thanks Vaughn. :-)
One thing though.
You wouldn't know how much bicarb to say 100ml of distilled water give a KH
of 4d ?
I'd hate to go through a load of KH test strips, they're kind of expensive.
Any idea what the solution in the supplied bottle is?
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