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Re: Dana's question/hardness



> I have a neutral ph of 7.0. I inject CO2, and add PMDD daily to obtain an iron
> reading of around 1.0ppm.

Dana, you should keep the levels down for Fe to around 0.1ppm or 
less. Maybe the high Fe levels could be affecting something within 
the plants. I know from experience that lots of Fe will help get you 
lots of algae, so beware.
The dK and dH values look pretty normal. 
____________________________________________________________
Jamie Johnson         "Keep your eyes on the stars
Chemist-Trace Metals   and your feet on the ground"
Davis & Floyd, Inc.            -Theodore Roosevelt 
jjohnson at davisfloyd_com