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Old 02-10-2004, 01:34 AM
 
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"Sandy Birrell" wrote in message ...
Scott wrote:
doesn't it have to get into the tank on plants or from water that
fish come in?


It is everywhere, it has even been found thousands of feet up in the
atmosphere. It is a bacteria, you can dry it out and years later add water
and it will grow. It doesn't need light to live and it can process the
nitrogen in the air to feed. The only way to realy kill it is to use an
anti-bacterial agent.

HTH.


No, this is not true. This tgenus is Oscillitoria, they don't use N2
gas unless they have heterocyst, no heterocyst, no N2 fixing.
You have generalized an entire group here and the species that infest
our tanks is a particular species.

You can kill it with antibiotics but then the air born spores land and
20-30 days later you can get it again. Mt St Helens had it after 20
days after the blast in 1980. Fire ecology finds these genus appearing
20-30 days an intense fire.

And it does in fact need light to live and grow. The spores are very
resistant, but the tank you have has is in there, it's waiting for the
right conditions to grow.

That's why I suggest adding KNO3, generally, low N levels cause it to
occur with poor plant growth stunted from a lack of N.

The BGA is NOT N limited in the least, you don't have a test kit that
can measure the needs and limits of BGA.

Well unless you work at research lab specifically on water quality
parameters and can speciate BGA's.
I do and can.

Regards,
Tom Barr
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Old 02-10-2004, 01:48 AM
 
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"Craig Brye" wrote in message ...
BINGO...

No light will temporarily eliminate it, but it will come back if you haven't
changed the reason you got it in the first place (water parameters).

--
Craig Brye
University of Phoenix Online

"Sandy Birrell" wrote in message
. ..
Scott wrote:
this is getting confusing, I have read and been told that blackouts
kill the bacteria because it needs light to live and that a two to
four day blackout should kill all the bacteria in an aquarium. are
you saying that blackouts cannot work?


The blackouts will kill the chlorophil in the bacteria, but not the

bacteria
itself. Once this is done you then have to make sure all your water
parameters are right, and keep them that way, or it will just come back
again. To get rid of it completely you have to kill the bacteria.

Read the rest of this thread, you will find there are more ways to deal

with
this than you will have time to try


--


Don`t Worry, Be Happy

Sandy
--

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And that's why I said kill it first, then add the KNO3 thereafter.
You need to remove or kill(cause senscence) whatever is there, THEN
correct the issue which was poor plant growth(NO3 limited plants).

This is true for any algae/plant combo. Remove the algae/kill it etc,
then correct the plant growth problem.

Even if you managed to kill it all with drugs, 30 days later you'll
have air born in your tank again unless you practice sterile technique
and have the tank sealed/filtered air etc.

Regards,
Tom Barr
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