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Re: Algea bloom + killi-related comment
Tish KB wrote:
> i think the main thing you need right now is patience.
> Sometimes algae can be a long time going. If you
> haven't already, i highly suggest reading this
> more usefully the "Conclusions" portion. it will help
> you choose the right action to take. Good luck!!
Is "patience" a micro-nutrient or macro? ;-)
The article is a genuine classic, and is held in reverence by the bulk of
aquatic gardeners. A better URL is:
The concept of a "limiting nutrient" was still in vogue at the time of the
original posting. Newer evidence places more emphasis on rate equations,
as there apparently is no such thing as a real "limiting nutrient" for
either algae or higher plants. [There have been some articles from Tropica
and others on this, recently.]
As shown by later studies, by Tom Barr, the conclusions were a bit too
simplistic, and algae-free tanks can often have significant amounts of
phosphates right in the water column. Tanks with excellent plant growth
often have rather high phosphate levels (and little algae), as from Tom's
tap water when he lived in Marin County. Many planted tanks benefit from
deliberate addition of phosphates.
Balanced nutrition, combined with a good daily light cycle, will let the
plants outdo the algae and suppress it to acceptable (i.e., near
invisible) levels. Algae needs no dark period to respire and grow, while
most vascular plants seem to need that regular dark time. Give them a
break (and a night).
My experience is that overdoing the light intensity (particularly with
inadequate CO2) is a very quick way to unbalance a tank. Getting it back
from the unsightly results can be rather tedious.
Ob. killy content:
My near distilled tap water (34ppm tds) was killing my Java moss,
particularly when I added any salt to raise tds. I corrected this by
adding "Equilibrium" in tiny amounts (< 1/4tsp/G), and my Java moss and
Java ferns are both growing nicely, now, with or without salt.
The astonishing thing is that some fish that were giving me no eggs are
suddenly pouring them out. I never found more than 4 or 5 eggs in my *Scr.
cauveti* Kindia tank. Last time I picked up their mop, I put it in a bowl
and found my hand was covered with eggs. I have no idea how many there
were. There were a lot more in the mop, but those just on my hand were
many more than I used to get total. The male has returned to his gorgeous
scarlet and black markings, too.
Not only are K, Ca and Na vital to cell metabolism in plants, I see that
they have a profound impact on the fish, too. Getting the ratios right may
improve many "difficult" breeding situations. Maybe those fish with "0"
ppm tds in nature get the essentials through their food. (?)
Wright Huntley -- 209 521-0557 -- 731 Loletta Ave, Modesto CA 95351
"The problem with the French is that they don't
have a word for entrepreneur."
-- George W. Bush, discussing the decline of the
French economy with British Prime Minister Tony Blair
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