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It
cost less to make a cement pond in Indonesia than it does to make a liner pond
here in the US of the same size.
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Hi Dr. Novak,
How are you? Hope everything is
going well. I've been observing the ORP and it seems my pond has an ORP of
around 350-400 lately. It had once dropped to 300, but that was only when I did
a thorough cleaning of the entire mechanical filter chambers (brushes and
japmats). As a matter of fact, right now the ORP meter is reading between
410-420. This worries me since I have read somewhere that an ORP of 400 or more
only happens when certain oxidation chemicals are added and if left that way it
will kill bacteria’s in the pond. Is this correct? Is it possible to have an
ORP reading of 400++ without administration of any kind of chemical? Is an ORP
of 400++ harmful to bacteria? What ORP value would you advise me to maintain,
and what must be done to achieve that? Btw, it has been raining heavily also
for several weeks now. I've read your post on ORP, but couldn't quite
understand it. I recall about positive and negative ORP and if not mistaken a
negative ORP would be preferable. But I'm not quite sure I understood
correctly.
Thank you Dr.Novak, hope to hear
from you.
Best regards,
Yogas
Yogas,
Don’t even worry about a redox of 410-420mV; bacteria are very
residual and it will take a considerably higher redox than what you are
experiencing to kill them. Remember Tridacna Clams can take a redox of 700mV
and have a symbiotic algae living in their mantles that continues
photosynthesis at those high mV readings. In fact most saltwater hobbyist keep
their aquariums at a 375-475 mV reading all the time with no harm to their
animals or invertebrates and that includes the bacteria.
Okay, hears what you have… VERY CLEAN POND WATER NOW UNLIKE
BEFORE with your old filtration system!
You must get use to the AFS, and all those that act like they know everything
about ponds and filters…well they really don’t! To get a redox of plus 400 mV
you must have an ECO friendly filtration system that utilizes bacteria, and
that bacteria then does not add more wastes in the form of ions than what is
naturally incoming into the system by outside insults. In other words the AFS
has more ion takers than producers. Conventional filters always add something
to the ECO-system that really doesn’t belong in that system. So the only way to
get rid of it, is through water changes. You are now using an ion filter unlike
those that don’t use an AFS they must through water changes and lots of
them at that to achieve what your doing with so little outlay. Just enjoy the
fruits of your labor and your Koi! Keep up with what you are doing and be proud
of your achievements. You trusted me and made the right decision by getting rid
of what you were told was good for something better.
The chief enemy of good is better! I know this is very confusing
to you because it does go across the grain of what everyone has brainwashed
you into believing all these years about that: Only very expensive equipment is
the only way to have über clean and good pond water for our Koi’s. It is one
way, but unfortunately not the only way!
Happy ponding,
Kevin
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