Re: [APD] Tank setup revisited

[Wright Huntley <whuntley at verizon_net>]

> Message: 1
> Date: Wed, 10 Mar 2004 00:35:15 -0800
> From: "Beek, Graham" <Graham_Beek at ds-s.com>
> Subject: [APD] Tank setup revisited
> To: "'aquatic-plants at actwin_com'" <aquatic-plants at actwin_com>
>
> I know that for every view there's always someone with the opposite view, so
> here's mine....

snip...

> As for pH for the popular fish, I would say between 6 and 8, ideally 6.5 to
> 7.5. Platies are nice and tough.
>
> Graham

Ours views agree a lot, here, Graham.

It bears repeating. pH may be easy to measure (and make the LFS rich) 
but fish, like most plants, just don't feel pH as such until it gets 
down below 4 or above 10. More important measurements are GH, KH and/or 
TDS. Heavy metals and other toxins are often pH dependent, too.

Fish don't suffer from "pH Shock" if the sudden change doesn't include 
some other factor. A quick change from 6 to 9 causes no visible 
reaction, unless ammonium was present, or tds was wildly different (more 
than 2X change).

Your guideline of 6-8 is a good conservative one. It avoids possible 
acidosis at low pH and conversion of much ammonium to deadly ammonia at 
higher pH.

I hardly ever use my 2 pH pens or several test kits any more. They just 
fail to tell me anything useful (until I get back to injecting CO2).

Wright

--
Wright Huntley - Rt. 001 Box K36, Bishop CA 93514 - whuntley at verizon_net
                    760 872-3995

"Do we really think that a government-dominated education is going to 
produce citizens capable of dominating their government, as the 
education of a truly vigilant self-governing people requires?" [Alan Keyes]

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