"Donald K" wrote in message
...
NetMax wrote:

I read this bacteria doubles every 20
minutes, so it should not be critical to have (but I question lots of
things ;~)

Ah, the bacteria grow at some rather quick rate in places they have
already colonized. (i.e. there is already a population of bacteria
there).

Example: If you have two filter cartridges and you remove one and
replace it with a clean one.

Are both filter cartridges fully populated the next day? No...

The population on the first one has doubled and there are probably
trace
colonies on the second one.

I haven't done the census to back this up, but it sounds REALLY
reasonable...

Yup, no argument from me, however the rapid rate of reproduction tends to
make this bacteria less of an issue. If it takes nitrifying bacteria 4
to 6 weeks to stabilize, then a similar population of anaerobic bacteria
would reach stability in... let's see, 14 hour doubling time
(nitrifiers), 4 weeks = 48 reproduction cycles. The same 48 cycles
would take (at 20 min).. 16 hours. I'm making all sorts of assumptions,
but the gist of it, is that most bacteria (including diseases) reproduce
very quickly, and it's only the nitrifiers that make us crazy for so
long. I also think there are more sources of the anarobic bacteria
(fecal matter, slime coat, airborne etc, than nitrifiers, but I'm not a
biologist (I'm going by observations, and the odd report).
--
www.NetMax.tk

-Donald
--
"A positive attitude may not solve all your problems, but it will annoy
enough people to make it worth the effort." -Herm Albright