Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - General Discussion
Click Here to Login

Join Aquarium Advice Today
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
Old 08-05-2011, 09:28 PM   #1
Aquarium Advice Addict
Deep Seven's Avatar
Join Date: Aug 2010
Location: Van. Isl., BC Canada
Posts: 1,854
Yellow Prussiate of Soda - Aquarium safe?

My source of potassium chloride, has a tiny amount of Sodium Ferrocyanide Decahydrate, "commonly known" as yellow prussiate of soda.

Anyone know if this would harm my fish? I'm not going to be using very much potassium chloride, so the amount prussiate of soda will be very small indeed, and will be mostly buried in the substrate.

"The important thing is not to stop questioning. Curiosity has its own reason for existing" A. Einstein
"Life is either a daring adventure or nothing."
"We can do anything we want to if we stick to it long enough." Helen Keller
Deep Seven is offline   Reply With Quote
Old 08-05-2011, 10:59 PM   #2
AA Team Emeritus
jsoong's Avatar

Join Date: Aug 2003
Location: Edmonton, Canada
Posts: 4,222
This is controversial & everything I read were conjectures.

YPS is used as anti-caking agent in table salt. For years the standard advice is to avoid table salt (due to the cyanide in YPS). I have also read *opinions* that said table salt is fine and YPS is in such low concentration that it had never caused problems.

Cyanide is naturally occurring, and people & animals can metabolize it, so a low level is fine. (That's why you get it in table salt!). Now, I have not read anything about the lethal (or harmful) concentrations of YPS in fish. (In people, LD50 is ~100 ppm of HCN.) I don't know how much free cyanide will dissociate from the Ferrocyanide, but it would be a magnitude lower than HCN.

So, I tend to agree with those who said salt with YPS is OK in fish tank (since the conc will be much lower than 100 ppm), but realizing that this is not backed up with any studies!
80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.
jsoong is offline   Reply With Quote

aquarium safe, safe

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sand - the right one for my aquarium Ann7667 Freshwater & Brackish - General Discussion 1 07-28-2011 01:01 PM
aquarium safe glue/silicon/sticky stuff alLexX DIY Projects 8 07-26-2011 07:07 PM
Is electrical tape safe for sw aquarium? Erikmichael23 General Hardware/Equipment Discussion 4 07-22-2011 07:46 AM
all-metal paperclips aquarium safe?? tarpon Freshwater & Brackish - General Discussion 3 07-08-2011 04:27 PM
Aquarium safe silicone? slitherbomb General Hardware/Equipment Discussion 10 06-28-2011 12:19 AM

» Photo Contest Winners

All times are GMT -4. The time now is 11:08 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.