Re: Muriatic Acid - HCL 34%

[BizEcology at aol_com]

RJ,

The problem with muriatic acid is that is has no buffering capability.  You 
can make buffers from the salts of weak acids, but using HCL to adjust pH 
down is like using NaOH (Lye) to adjust it up.

Just my $.02 worth.

<<** Larry **>>


In a message dated 5/4/02 12:52:34 AM Eastern Daylight Time, 
TranquilityBase at NetZero_Net writes:

<< Hi Folks,
 
 I went to my LFS and found that they no longer carried Sodium BiPhosphate.
 They carried some liquid that cost something like $5.00 per pint and
 required about a cup to adjust 20 gallons of water. So I went to Home Depot
 and picked up 2 gal of Muriatic Acid 34% Hydrochloric Acid. The carry it in
 the pool section for about $6.00 for 2 gal. I suppose it is for swimming
 pool use.
 
 I usually adjust a 20 gal fish tank (actually about 17 gal) at a time from
 pH 8.3 to 7.3. I know that I will have to tweak the recipe some but does
 anybody have a clue about how much acid I should start with. For example 1
 ml or 1 cup?
 
 I know some of you use it already and others are chemists. I would
 appreciate your feedback. O know that there is a cool formula that would
 resolve my problem but for the life of me I don't remember enough of my high
 school chemistry to remember what it was.
  >>


Larry Tagrin
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