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syzygy9 02-20-2013 10:37 PM

Seachem Flourish Iron question
OK...odd question, but does this stuff change color over time? I just finished the last of my 250ml bottle that I'd bought maybe 1.5 to 2 yrs ago and it was red...really really deep dark red, but I just opened my brand new bottle at it's a yellowish color (and yes I shook it up well).

Shortly after buying the first bottle I switched to dry EDTA iron dosing for about 6-9 months and then switched back so I don't remember what color it started off.

Seattle_Aquarist 02-20-2013 10:40 PM

Hi syzygy9,

Per Seachem it has basically an unlimited shelf life but any of their products with iron in them will discolor over time.

Zorfox 02-20-2013 11:05 PM

I believe iron becomes red when it absorbs oxygen (oxidation). Basically you have a bottle of rust lol

Sharpchick 02-21-2013 01:54 AM

Seachem handles this question in their FAQs. They say one batch may be one color and another, another color. BUT - they say, it has absolutely no effect on the product.

cpeterson9 02-24-2013 08:10 AM

Should be fine iron tends to change color over time

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