I'm with Ray, we suggest going to 4ppm for a fishless cycle.
_____
From: AquaticLife@yahoogroups.com [mailto:AquaticLife@yahoogroups.com] On
Behalf Of Patrick
Sent: Thursday, November 29, 2012 9:36 AM
To: AquaticLife@yahoogroups.com
Subject: [AquaticLife] Re: Thanks Everyone! More info needed!!
--- In AquaticLife@yahoogroups.com <mailto:AquaticLife%40yahoogroups.com> ,
sevenspringss@... wrote:
> In actual practice though, time and time again, through numerous
> establishing cycles, it has been decisely and repeatedly shown,
> that using only this token low level of ammonia as compared to
> using a much larger ammonia value will actually impede the
> nitrobacter's multiplication rate -- or at the very
> least, not enable it to advance nearly as fast as when a higher
> ammonia level is present -- even though they can't consume it all
> at once. While I have no explanation for this, I speak from
> experience and from the many experiences of hobbyists who I guide
> and follow through their cycling stages; a 0.25 ppm level of
> ammonia has shown to actually extend the establishing of a
> cycle by up to 2 additional weeks as opposed to maintaining a
> higher ammonia level.
Good morning Ray,
Unfortunately your observation/experience is anecdotal. Show me the data. :)
There are several key factors that go into the growth of nitrobacter growth.
In particular pH, how much free ammonia is present in the water,
temperature, oxygen levels, presence of other acids some important to their
growth and some that can inhibit their growth, and even the light source
over a tank can all have a direct impact on the rate at which these species
of bacteria grow.
For example, a higher pH is better for growth rates but also creates more
free ammonia (vs. ammonium) which is not good for growth rates.
So while it is nearly impossible for hobbyist to be able to control all
these things with any degree of certainty and every tank is usually very
different than every other tank, you can not simply pick ONE factor and
claim it is the one limiting the process when any one aquarium can have
widely varying factors such as pH, changes in pH through the day,
temperatures, water chemistry, etc. all of which effect that rate.
So I would be hesitant to suggest people arbitrarily raise their measured
ammonia levels to speed up the process when any number of other factors may
be the cause of a slow cycle time. It might help in some cases but in just
as many other cases it may do nothing more than raise the ammonia levels for
the inhabitants in the tank.
Regards,
Patrick
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