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Re: Surface scum
> From: George Booth <booth at hpmtlgb1_lvld.hp.com>
> Subject: Re: surface scum
> So can folks corrrelate surface scum with iron additions; perhaps even with
> specific brands of fertilizer? Do tanks using PMDD get it?
I have never used "PMDD" as the mixture, but do use the method,
and have seen surface scum, of a bright green variety. I have never
managed to correlate it with anything in particular. I don't have
any at the moment.
Paul Sears Ottawa, Canada