Salting Your Koi
(Page 2 of 2)
by Elmer Epistola
Posted: September 1, 2004
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If
salt is this good, then why would some people advise against
it? Well, koi are freshwater fish, so excessive use of salt
can kill them. Note that excessive salting reverses the
osmotic pressure, making the koi release water faster than it should
until it dies of dehydration. Salt also reacts negatively with certain pond
treatments such as Malachite green. Salt is also harmful, and
can be fatal to plants in the pond. Salt is also corrosive, so
you might be inadvertently promoting corrosion in some metallic
features around your pond with its use. Furthermore, according
to koi experts, using salt with zeolite will produce reactions that
dump ammonia back into the pond. Lastly, controlling salt
concentration is very difficult to achieve without a hydrometer.
So there - the pros and cons of
using salt on your koi.
In summary, it seems that nobody is contesting the notion that
salting would be
a good short-term treatment for any koi that doesn't look good, as
long as the concentration is correct. Thus, it seems advisable
to: 1) put salt in quarantine or hospital tanks while the sick koi
is recovering and/or 2) immerse the sick koi in a salt bath of
higher concentration but for a much shorter duration.
Where,
then, do koi experts differ as far as salting is concerned? Some
koi hobbyists permanently maintain a certain level of salt
concentration in their main ponds to relieve osmotic stress. This works well for a lot
of people, so we probably can't argue with people who have had
success with it. However, some koi experts think that this is
'unnatural' for koi, being freshwater fish. Besides, putting
salt in the main pond makes it difficult to subject to other
treatments when the need arises or to maintain plants in the pond,
as mentioned above. This, therefore, is where some koi experts
do not meet.
In the end, every
koi hobbyist will really have to decide for himself how to take
advantage of the beneficial uses of salt in koi keeping. Let
us know at
www.koiandponds.com if you have
some interesting experiences regarding salting your koi.
Table
1 below shows the various concentrations used for salt treatments.
Note that only pure rock salt with no additives must be used.
Please visit our
Salt Concentration Tables
for your quick reference in conducting salt treatments.
Table 1. Salt
Treatments for Koi
Treatment |
Purpose |
Dosage |
Duration |
Salt Bath |
as
immediate treatment to parasitic infestation and bacterial
infection |
2.5% - 3%
-
about 1 to 1.2 pounds of salt per 5 gallons of water |
2-5 minutes, depending on koi health; remove koi at once if it
loses balance |
Salt Therapy |
as
a long-term treatment to help sick koi defend against
parasites and recover in the pond |
0.3% - 0.5%
-
about 2.4 to 4 pounds of salt per 100 gallons of water |
2
-4 weeks |
Pond Salting |
to
maintain a stable salt concentration level in the pond |
0.2%-0.4%
-
about 1.6 to 3.2 pounds of salt per 100 gallons of water |
indefinite |
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see
also
Salt
Concentration Tables
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