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[APD] Re: Gw/NH4

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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