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[APD] Re: P and K low level marker plants

My idea when I asked these markers was to include them on the tank, and
probabily you will have a more precise "warning  red ligth" against ntrient
deplention than test kits

Antonio Trías

> Message: 4
> Date: Fri, 24 Oct 2003 13:24:02 -0400
> From: "Giancarlo Podio" <gp at isaconsulting_com>
> Subject: Re: [APD] P and K low level marker plants
> To: <aquatic-plants at actwin_com>
> Like Daphne said, small pinholes appear in the older leaves when K is
> my giant hygro seems to show K deficiencies at higher levels than the
> hygro, usually if my sunset hygro has pinholes, the giant hygro looks
> bad. I battled with stunted growth for a while with my stellata and
> then discovered that if I give them more P than what I normally keep they
> grew much better, similar with N but not as evident. I guess it looks
> similar to calcium deficiency, just not as bad. Older leaves at the same
> time look quite bad, they loose their color in the gracilis or simply fall
> off or turn dark green in the stellata. Not much of a scientific
> observation.... :-)
> I have to say however that the stellata and gracilis both seem to prefer
> higher P levels than I was used to keeping in my tanks, I maintain around
> 0.5-1ppm phosphate level to keep them looking nice (1ppm after water
> which drops to around 0.5 by mid week, then I add some more). My other
> plants have also shown better reds with the higher P level. Anyone else
> similar experiences with thes plants?
> Thanks
> Giancarlo Podio
> www.gpodio.com
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