Question about Water and CRS - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 01-14-2013, 04:41 PM Thread Starter
Algae Grower
Join Date: Dec 2012
Location: Olympia, WA
Posts: 76
Question about Water and CRS

I have a tank of CRS and have been using Albertson's Distilled water for top offs because my tap water has a high PH. I read on one of the shrimp blogs that people were using the RO water sold by Walmart for their shrimp tanks - so yesterday, I truck over to Walmart and buy a 5 gal. jug of their RO water intending on doing a water change.

Before doing so, I looked up online the name of the water, called PRIMO, and according to its water report, it contains 0.016ppm copper - yikes -

Is 0.016 ppm copper considered high enough to hurt the CRS? If so, I don't understand how people are using the PRIMO for their shrimp tanks. I contacted Seachem rep regarding whether Prime would remove the copper and he says it only detoxifies the copper temporaily.

So, my question - my tap water is out. Is the PRIMO water out too? And what can I use for water changes and top offs? It's a small 10 gal tank so purchasing water from the store is my best bet - but I don't know what to buy. Any advice will be greatly helpful. Thanks.
CherokeeNative is offline  
Sponsored Links
post #2 of 2 (permalink) Old 01-15-2013, 04:19 PM
Planted Tank Obsessed
Join Date: Feb 2012
Location: USA
Posts: 330
That is .0000016%.
People feed their shrimp spirulina, which can contain up to .005% copper, and they are eating that directly. They do need some copper. It is the high amounts that are dosed for medication that causes issues.
Unless you have excessive evaporation which would cause the concentration to build up, I don't see that as being an issue. Maybe wait for some of the more experienced shrimp keepers to chime in though.

Does the zeolite based filter media pull copper from the water column? You could always run that occasionally if you are concerned.
Beer is offline  

Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome