Re: Aquatic Plants Digest V1 #100

Kevin Conlin says.....and

>George Booth added:
>> A long time ago, we used a UV sterilizer (thanks to the well meaning
>> but money hungry fish store) and determined that is was removing, or
>> making unavailable, the iron in the water.  Turn it off. 

I think George has answered your question with regard to the
lack of measurable iron in the water.

FeEDTA and FeDTPA are very soluble in water and are not precipitates.