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Re: Fe Levels and Conversions

>Date: Thu, 9 Apr 1998 15:16:56 -0400
>From: "Ken Guin" <kenguin at homemail_com>
>I tested my aquarium last night, and there was
>no sign of Fe in the water column.

I've seen cases where quite a bit of iron has to be added to the water before it 
starts to register on a test kit. I don't know if it is being percipited out by 
something in the water or it is used up by voracious iron-starved plants or 

Are there any chemical filtration products in the system? Any UV sterilyzers?  
You might try adding some PMDD to plain water in a bucket and check the results. 
Do you have a decent, fresh test kit?