what to dose to Increase the pH of drinking water in RO

[Kumar]

I have one Reverse Osmosis Unit for Drinking water, after RO water pH
is 6.1, please advice what should I add as dosing to increase the pH
upto 7.0. Regards Kumar

[J. Bahl]

"Kumar" > wrote in message
oups.com...
>I have one Reverse Osmosis Unit for Drinking water, after RO water pH
> is 6.1, please advice what should I add as dosing to increase the pH
> upto 7.0. Regards Kumar
>

Baking soda will increase the pH and kH.

John

[dc]

"Kumar" > wrote in news:1148815276.643829.193770
@u72g2000cwu.googlegroups.com:

> I have one Reverse Osmosis Unit for Drinking water, after RO water pH
> is 6.1, please advice what should I add as dosing to increase the pH
> upto 7.0. Regards Kumar

Use any harmless carbonate or bicarbonate. Baking soda (sodium
bicarbonate) would be the cheapest way to do it, but calcium carbonate is a
much more stable method. Get yourself a KH test kit and aim for 3 - 4 dKH-
that should be enough buffering capacity to maintain a pH of roughly 7.0
under most circumstances.

Some people add a little crushed coral into their substrate or filter, but
be careful not to add very much as you not be able to control the rate the
crushed coral dissolves calcium bicarbonate into your water. If time is on
your side and your a DIY kind of person, you can attach a power filter
packed with crushed coral to your reserve RO water and monitor the water
until the pH and KH reach the desired levels before adding it to your
aquarium.

The easiest store bought route for RO water is to go with a tub of
Seachem's Equalibrium and Alkaline Buffer.

[stuarth]

Be aware that RO water can cause test kits to read the ph wrong.

After all RO water is pure water and pure water has a ph of 7.

[dc]

"stuarth" > wrote in news:1148892795.339678.89970
@y43g2000cwc.googlegroups.com:

> Be aware that RO water can cause test kits to read the ph wrong.
>
> After all RO water is pure water and pure water has a ph of 7.

He is talking about a drinking RO unit though. Those units do not produce
completely deionized water. True RO water is not suitable for drinking.

[dc]

dc > wrote in
:

> "stuarth" > wrote in news:1148892795.339678.89970
> @y43g2000cwc.googlegroups.com:
>
>> Be aware that RO water can cause test kits to read the ph wrong.
>>
>> After all RO water is pure water and pure water has a ph of 7.
>
> He is talking about a drinking RO unit though. Those units do not
> produce completely deionized water. True RO water is not suitable for
> drinking.

....and even in the case of pure RO water, the pH can fluctuate wildly after
it is standing for a short time depending on the amount of gas exchange
taking place at the surface.