Re: RO water

[Wright Huntley <huntley1 at home_com>]

Michael Gray wrote:
> 
> I just got an RO unit.  The water it produces is 10 uS and 8.0 pH.  How do
> I lower the pH without raisng the TDS to high?

My take is don't worry about it. pH is utterly meaningless until you get
more "stuff" in the water. If there is lots of ammonia, tds would go up and
pH that high would be a problem. Aereate it a bit and atmospheric CO2 will
drop it to the low 6s. 

Too low, and nitrites could be a problem. Peat can take it way too low, so
be sure the fish waste products are being consumed by plants or active
filters before using it.

IMHO, fish don't feel pH as much as they feel the toxic ions that can be pH
dependent, such as the equilibrium between ammonium and ammonia. I have
often accidentally subjected killies to pH shifts of well over two full
points. As long as the toxic stuff was absent, and the tds was similar, they
have never shown any distress.

My pH meter gets very little use, any more.

Wright

-- 
Wright Huntley, Fremont CA, USA, 510 494-8679  huntleyone at home dot com

         "DEMOCRACY" is two wolves and a lamb voting on lunch.
     "LIBERTY" is a well-armed lamb denying enforcement of the vote.
             *** http://www.self-gov.org/index.html ***

---

References:

• Re: RO water
• From: Michael Gray <megray1 at pop_uky.edu>

---

• Prev by Date: Re: RO water
• Next by Date: Hatching rates
• Prev by thread: Re: RO water
• Next by thread: Salt
• Index(es):
  • Date
  • Thread