Re: [APD] Re: Gw/NH4 -- or - Begging limitless questions

["S. Hieber" <shieber at yahoo_com>]

Well, something is going to limit them or, well, their
growth would be unlimited -- no tank would be big enough to
hold them.

But that doesn't happen.  So what limits that we actual
experience have what kinds of appearances?  Does light
limited look like iron limited?  Does it look like not
limited at all except the plant doesn't get gargantuan?

Chems chemical reaction rates, metabolic rates ("It's not
my nutrients, I just have a fast metabolism"), energy/light
input, temps?  You can't keep giving plants more of
everything, what's the desireable operative limitation, if
anyone knows?

Scott H.

--- Roger Miller <roger at spinn_net> wrote:
> On Tuesday 16 September 2003 05:11, Steve Pushak wrote:
> 
> > Maybe for truly healthy tanks, we should think about
> having growth limited
> > by light instead of nutrients?!!
> 
> Here, here Steve!  There is no nutrient limitation that
> doesn't eventually 
> show up as a nutrient deficiency.  Nutrient limited
> plants must eventually 
> show the effect in unhealthy growth, poor coloration,
> loss of leaves, stunted 
> development and so on.
> 
> If plants are to stay healthy and robust they cannot be
> nutrient limited.  
> That doesn't mean that an aquarium has to be dosed with
> every chemical known 
> to man.  The necessary nutrients can be provided through
> several different 
> pathways.  It's up to the aquarist to pick a method that
> is appropriate to 
> the light and CO2 levels that they provide, the type of
> plants they choose to 
> grow and the amount of time they are willing to invest.
> 
> 
> Roger Miller
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> Aquatic-Plants at actwin_com
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