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RE: [APD] RE: Cyanophyta
So if NO3 does not drop below 20-30 ppm there would not be much point in using KNO3?
On Thursday, December 11, 2003 19:42, Thomas Barr [SMTP:tcbiii at earthlink_net] wrote:
> From: Phil Bunch <pbunch at cox_net>
> Subject: RE: [APD] RE: Cyanophyta/BGA (Thomas Barr)
> > What nitrate levels are conducive to BGA growth. I'm pretty sure this
> > varies with other parameters but perhaps there is a relatively
> > straightforward answer.
> > Phil Bunch
> Not enough.
> For the plants that is......
> So less than 1-2ppm for more than a couple of days in high light/CO2 tanks
> that are in good shape as far PO4, CO2, light, Traces.
> If your NO3 bottoms out for more than a couple to 4 days, things will shut
> down plant wise and then algae will come in.
> You can get away with longer peroids of time if you have less light.
> Now there's a good reason to have less light, less lagae potential and less
> plant _growth_, but still getting good plant _health_.
> There's a big difference between health and growth.
> Tom Barr
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