Rocks

[Rick]

Are there types of rocks that one could add to a tank or small pond, that
would buffer pH? For instance, limestone, marble, slate. I'm not inerested
in being a chemist and adding pH up or down, I think that can do more harm
than good. My tap water is 7.6, but for some reason all my tanks and pond
have different pH levels (2tanks at 6.8, 2 at 7.2 and pond at 8.0) and all
have the same water source. 3 tanks (1 at 6.8 and 2 at 7.2) have some marble
(I think) in them, 3 tanks (2 at 6.8 and 1 at 7.2) have slate in them. The
pond has no marble and some slate and some other nice rocks I picked up on a
vacation in the Great Smokie Mountians. Anyway to test rocks if they will
affect pH up or down?
Thanx

[Daniel Morrow]

Mid posted.


"Rick" > wrote in message
m...
> Are there types of rocks that one could add to a tank or small pond, that
> would buffer pH? For instance

Limestone should buffer to a ph of approximately 8.2, and I am sure other
rock types buffer as well to some extent (hence the rocks used for cichlid
tanks that keep the ph at 8.2 or so). I don't know much more than that
though. For more information check the web or look here from the experts.
Good luck and later!

, limestone, marble, slate. I'm not inerested
> in being a chemist and adding pH up or down, I think that can do more harm
> than good. My tap water is 7.6, but for some reason all my tanks and pond
> have different pH levels (2tanks at 6.8, 2 at 7.2 and pond at 8.0) and all
> have the same water source. 3 tanks (1 at 6.8 and 2 at 7.2) have some
marble
> (I think) in them, 3 tanks (2 at 6.8 and 1 at 7.2) have slate in them. The
> pond has no marble and some slate and some other nice rocks I picked up on
a
> vacation in the Great Smokie Mountians. Anyway to test rocks if they will
> affect pH up or down?
> Thanx
>
>

[NetMax]

"Rick" > wrote in message
m...
> Are there types of rocks that one could add to a tank or small pond,
> that would buffer pH? For instance, limestone, marble, slate. I'm not
> inerested in being a chemist and adding pH up or down, I think that can
> do more harm than good. My tap water is 7.6, but for some reason all my
> tanks and pond have different pH levels (2tanks at 6.8, 2 at 7.2 and
> pond at 8.0) and all have the same water source. 3 tanks (1 at 6.8 and
> 2 at 7.2) have some marble (I think) in them, 3 tanks (2 at 6.8 and 1
> at 7.2) have slate in them. The pond has no marble and some slate and
> some other nice rocks I picked up on a vacation in the Great Smokie
> Mountians. Anyway to test rocks if they will affect pH up or down?
> Thanx


Fill a glass with bits of the same type of rock which you want to test,
and then fill the glass with RO or DI water. Periodically check their
pH.
--
www.NetMax.tk

[Rick]

"NetMax" > wrote in message
...
> "Rick" > wrote in message
> m...
>> Are there types of rocks that one could add to a tank or small pond, that
>> would buffer pH? For instance, limestone, marble, slate. I'm not
>> inerested in being a chemist and adding pH up or down, I think that can
>> do more harm than good. My tap water is 7.6, but for some reason all my
>> tanks and pond have different pH levels (2tanks at 6.8, 2 at 7.2 and pond
>> at 8.0) and all have the same water source. 3 tanks (1 at 6.8 and 2 at
>> 7.2) have some marble (I think) in them, 3 tanks (2 at 6.8 and 1 at 7.2)
>> have slate in them. The pond has no marble and some slate and some other
>> nice rocks I picked up on a vacation in the Great Smokie Mountians.
>> Anyway to test rocks if they will affect pH up or down?
>> Thanx
>
>
> Fill a glass with bits of the same type of rock which you want to test,
> and then fill the glass with RO or DI water. Periodically check their pH.
> --
> www.NetMax.tk
>
Good idea, thanks