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Re: Why does KH drop?
Greg Morin <greg at seachem_com> wrote:
>>So now I believe that Flourite drops the kH at the onset. Dr. Morin (from
>>Seachem), any comments on this ?
>That is a rather dramatic drop in KH. Flourite does not affect pH or
>KH either up or down so it can't be what is contributing to this. Do
>you have any drift wood or other source of tannins? There must be
>something else in the tank that is contributing to acid or acid
>formation and is causing the resulting drop in KH.
>Gregory Morin, Ph.D. ~~~~~~~Research Director~~~~~~~~~~~~~~
>Seachem Laboratories, Inc. www.seachem.com 888-SEACHEM
Well, yes, I have driftwood in the tank. But, before putting together the
tank, I kept the wood for several weeks submerged in a rubbermaid trash can.
The wood includes swamp rootwood from aquariumdriftwood.com and malaysisan
driftwood. The wood did leach a small, barely noticeable tanin. I measured
the water parameters out of curiosity, just to see how and if this type of
driftwood would change the water chemistry. They were still close to the
tap water values after all that time, so I'm assuming the driftwood wasn't
the cause. Since everything else was kep constant, I'm blaming the kH drop
on the Flourite by lack of a better explanation. Maybe I should try to
reproduce this effect under more controlled conditions. If I ever find
time to do that (being very busy lately) I will report back here.
- Ivo Busko
"Buy a fish, Save a tree !"
Project Piaba: http://www.angelfire.com/pq/piaba/