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Re: [APD] KH with no CO2
On 12/14/05, Vaughn Hopkins <hoppycalif at yahoo_com> wrote:
>
>
>
> Now, my question is: are the plants growing by utilizing carbonates
> for their carbon, thus depleting it? And, when I add CO2 will that
> depletion continue, or will the plants just use the CO2? I am trying
> to slowly bring the tank water to at least 4 degrees KH hardness before
> I get the CO2 going.
Hi Vaughn,
My experience is that this problem will go away once you get the CO2 going
provided you inject enough so that CO2 is not a limiting factor. I monitor
KH in my non-CO2 (Excel) tanks fairly regularly and if I find it dropping
too much I increase the KH with baking soda. I agree with Dave that
potassium carbonate is better but I use what I have.
I don't worry too much about the rate of change of KH. During parts of the
year the out of the tap KH here is pretty low. I just dump in baking soda
to raise it several notches. Hasn't hurt the fish or the plants that I've
seen.
YMMV.
Liz
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