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RE: Aquatic Plants Digest V3 #128

> Date: Sun, 8 Mar 1998 23:27:26 EST
> From: IDMiamiBob <IDMiamiBob at aol_com>
> Roger Miller writes:
> << In fact, I fail (miserably) to understand the logic of adding nitrate
>  fertilizer to limit algae growth. >>
> I'm not sure, Roger, but I think the idea is that if your tank is heavily
> planted, and you drive the nitrate up so that the phosphate is the
> limiter, the "Macro" plants will consume enough phosphate to starve out 
> "Micro" plants (algae)  Of course my tanks at this point are not that 
> planted, so I have tried it yet.

Last summer I had a problem with a bunch of E. Tenellus that was almost 
completely obscured by a black algae.  One of the list members wised me up 
that despite "Nitrate is a toxin" feeling one gets from reading most 
aquarium keeping books, zero nitrates is also not a good situation.  My 
tank was N-limited.

I added enough KNO3 to reach about 5ppm and kept it there.  A week or so 
later I had to clean my filters almost daily because of the die off of this 
black algae.

It worked for me.

The very act of seeking sets something in motion to meet us;
something in the universe, or in the unconscious responds as if
to an invitation.  - Jean Shinoda Bolen