Chelated Iron - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old 10-13-2011, 01:16 PM Thread Starter
Algae Grower
PTrader: (0/0%)
Join Date: Oct 2011
Location: europa
Posts: 59
Chelated Iron

Hi I bought from a friend Iron diluted in water since last year.Its been well kept in dark tank and in dark place.I was wondering: How long can diluted Iron be useful until it oxidate?
john.shephard25 is offline  
Sponsored Links
post #2 of 4 (permalink) Old 10-13-2011, 06:46 PM
Planted Tank Guru
Sharkfood's Avatar
PTrader: (2/100%)
Join Date: May 2010
Location: Pittsburgh, Pa
Posts: 2,536
Depends on the molecule. Chelated iron won't oxidize until it is seperated from the acid. If it's pure iron, I would imagine it will begin rusting immediately unless kept in an oxygen free environment. A low pH solution will last a longer time, whereas a more neutral or basic solution will break apart the molecule and cause free iron to drop out of the solution.

Also, DPTA is more stable than EDTA iron unless the pH of the solution is very low. In powder form, with near zero humidity, either will last a very, very long time. When mixed with most tap water, it will begin to degrade quickly. I would expect you could get weeks out of distilled water without a major breakdown. I haven't tested for this as I don't have the proper equipment. My iron test appears to register all iron in the solution or suspension, regardless of what other molecules it is affiliated with.

Hydroponic solutions are usually kept below pH 6.5 to help keep iron and manganese in the solution. Once the solution gets into the neutral range, iron precipitates out quickly.
Sharkfood is offline  
post #3 of 4 (permalink) Old 10-14-2011, 11:53 AM Thread Starter
Algae Grower
PTrader: (0/0%)
Join Date: Oct 2011
Location: europa
Posts: 59
Yeap, its useless I knew it.Its very difficult for me to bay any kind of iron were I live and even if I could how 'm I suppose to use it. I usualy add CSM+B dry and I overdose once and a wile ...What about those branded liquid Iron fertilizers, are they good, what do you recommend?
john.shephard25 is offline  
post #4 of 4 (permalink) Old 10-15-2011, 10:20 AM Thread Starter
Algae Grower
PTrader: (0/0%)
Join Date: Oct 2011
Location: europa
Posts: 59
Well, I have diluted it in a destiled water and I keep it in a bottle that is firmly closed and in a dark so hopefully its working still.If I overdose Iron what can I expect?
john.shephard25 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:


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