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Re: [APD] Calcium Carbonate question

Stuart Halliday wrote:
> I've recently added a small quantity of this powder to my 25 litre planted 
> aquarium in order to raise the GH above zero. (I live in a soft water area).
> Aquarium water is KH high and ph is around 7.5.
> (I added some sodium bicarbonate a few days ago.)
> However after leaving the water to clear for 3 hours, I tested again and 
> still the GH is zero.
> Am I doing something wrong?

1/4 teaspoon or so should raise your GH by around 2 degrees in a 25 
liter tank. If your test kit doesn't reflect this, then it may be the 

Jerry Baker
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Aquatic-Plants at actwin_com