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Re: [APD] Ammonia and Nitrates

I read your post on the BarrReport in which you described your 
I'm still baffled as to why you concluded that excessive nitrates cause 
algae when the jar
dosed with NO3 also had 15x the amount of PO4 relative to the non-dosed 


On Dec 2, 2005, at 8:40 AM, Bill D wrote:

> Last summer I put two one gallon jars in a sunny location.  One 
> contained
> well water which was relatively low on nutrients; the other contained 
> the
> same
> water plus 60 ppm of NO3.
> After a month the low nutrient jar had almost no algae present.  The 
> glass
> of the
> higher nutrient jar was covered with algae, so much so that some of it 
> had
> to be
> scraped off to see the water.

> the purpose of the experiment was
> to test
> the effect of high nitrate levels on the growth of algae, and it did.
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