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RE: Reconstituting RO/DI Water
Randy
1. at what percentage of bypass water or tap water would you recommend
adding?
2. I realize the original question was stated with NaCl. however I use
Instant Ocean as my tank "salt" of choice if and when I add any "salt" at
all. Would this change your recommendation at all.
3. the calcium, magnesium, and sulfate that are in your water are also salts
(Dad was a chemist) So I would say you do recommend adding salt, just not
NaCl. ;)
Erick
-----Original Message-----
From: owner-apisto@admin.listbox.com
[mailto:owner-apisto@admin.listbox.com]On Behalf Of Randy Carey
Sent: Saturday, March 23, 2002 7:27 PM
To: apisto@listbox.com
Subject: Re: Reconstituting RO/DI Water
I've got to think that adding salt is worse than adding back tap
water. The water of South America has some natural balances of various
ions. As I recall, Calcium is usually present by a 2:1 to 10:1 ratio over
Magnesium. Sodium is usually far less present. These numbers for various
biotopes are given in the Mayland/Bork book. So if your hard water has
calcium and magnesium and sulfates in it, adding a little of that would
make the water more like those of the biotopes. Adding NaCl would not.
For some reason, many aquarists think that if they pumped the water through
an r/o system it would be a shame to put back some of what they took
out. Why?! If one needs to add some hardness back and one's hard water
has the right mineral mix, it would be a shame to use something else.
--Randy
At 05:36 PM 3/23/2002, you wrote:
>Greetings all. List discussions have often included the use of RO/DI water
>for just all about the ailments of our apistos guests. A recent addition,
>my RO/DI produces TDS 003 and pH 8 (starts at 9.2 and stabilizes at 8).
>I've continued my older practice of adding a teaspoon NaCl to 5 gallons
>which seemed to give the best results given my tap water. However...
>
>I would like to ask the list about -
>How do people reconstitute their RO/DI water for apisto's? I would offer
>two categories of tanks - breeding tanks and planted community tanks (if
>people agree that that makes a difference).
>
>Thanks!
>J Sullivan
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