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Aquatic Plants Digest V2 #650

(Aquatic Plants Digest) said on 04/15/97 at 03:39 PM:

>there has been
>       some controversy as to whose [iron kits] will accurately measure
>       chelated Fe

Now there's a question.  Is chelated Fe just a reservoir and not
useful directly to the plants (I think so).  Or should chelated Fe
be treated as equal to Ferrous ions when measuring Fe levels and
shooting for that 100ppb????

Dave Gomberg, FormMaestro!    gomberg at wcf_com