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Re: [APD] Calcium Carbonate question
I believe Jerry Baker wrote this email section below:
> Stuart Halliday wrote:
>> My tank was even more opaque than this.
>> 48 hours later it's looking like a disaster zone.
>> All the surfaces of the plants, gravel, etc. are covered with a thin powder
>> of white.
> Not to state the obvious, but that means it isn't dissolving for some
> reason. The cloud you saw in the picture was the result of adding the
> equivalent of 1/4 teaspoon to 23 liters. I suspect that there is no
> carbonic acid to react with the CaCO3. It should only take a couple
> hours at most to consume it all. How high is your KH, or more
> importantly, your CO2?
Thanks for your comments.
My KH is high at 15-20dh, ph is 7.8-8 and I've no idea what the CO2 level
is. All the Co2 level graphs I've seen only go up to a KH of 10.
I have a Tetra-plant CO2 depot bottle that I added CO2 via a 5cm long tube
which is filled twice a day. The Co2 is slowly diffused into the water at
Today, after the water changes, the KH is down to 3d and the ph is 6.8 so by
a co2 chart I came across in the Internet it tells me the level is 15ppm.
GH is still zero. :-)
My big 250L tank reads a GH of 6d as a year ago I put in a couple of
handfuls of Coral sand to harden it up a little. Maybe I should just do the
same in the small tank.
The expiry date on the Tetra test strips is Jan 2008.
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