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Koi Health - Health & Parasite info

Mick1912

YKS club member
"Virkon " 10:46pm Wednesday 19th Sep


joined: 8th Oct 14
last here: 9:29am Sunday 1st Sep
posts: 154
from: North Notts

I'm using Virkon powder after each filter clean.(every week on average)

Dosage 5g per 1000 gal as per various sites instructions..

wondering....... is this strong enough?

Mick
JIMMY/S

YKS moderator team..
"RE: Virkon" 3:30am Thursday 20th Sep


joined: 13th Jul 10
last here: 12:55pm Today
posts: 2357
from: West Yorkshire

Hi Mick I dose at 15grams per 1000 gal but not as often as you around every month.


Regards Jim
14TB

YKS club member
"RE: Virkon" 8:29am Thursday 20th Sep


joined: 6th Mar 10
last here: 9:00am Today
posts: 6369
from: SOUTH YORKS

Mick,

See this link for good info.

www.koicarp.org.uk/medications%20and%20their%20uses.htm

A well respected site .

Hope S is ok .



Tony


Mick1912

YKS club member
"RE: Virkon" 10:31pm Thursday 20th Sep


joined: 8th Oct 14
last here: 9:29am Sunday 1st Sep
posts: 154
from: North Notts

all good thanks Tony

Sally's garage is now cleared and the big barn. (almost) from the fire.
a new small shed is on the way and insurance is going through.

Good to see I'm dosing at per recommendations - Weekly.


Mick1912

YKS club member
"RE: Virkon" 10:33pm Thursday 20th Sep


joined: 8th Oct 14
last here: 9:29am Sunday 1st Sep
posts: 154
from: North Notts

Thanks Jim

is there a reason for this, rather than the weekly / after a filter clean.


Thanks

Mick
JIMMY/S

YKS moderator team..
"RE: Virkon" 7:43pm Friday 21st Sep | message edited once


joined: 13th Jul 10
last here: 12:55pm Today
posts: 2357
from: West Yorkshire

I always dose to this level and don't experience any problems. Since I fitted my drum I don't have to clean the filters as often if it was a weekly dose though I would dose 5-10 grams per 1000gals.

Regards Jim
Mick1912

YKS club member
"RE: Virkon" 10:31pm Friday 21st Sep


joined: 8th Oct 14
last here: 9:29am Sunday 1st Sep
posts: 154
from: North Notts

thanks Jim


Paul Dodsworth

YKS club member
"RE: Virkon" 9:36pm Saturday 12th Oct
joined: 14th Aug 18
last here: 12:30am Sunday 1st Dec
posts: 32
from:

I’ve used Virkon to clean my multi bay empty bays when I’ve removed brushes to clean before rinsing to drain with fresh water. If you dose after each filter clean and it’s being recommended to use a lower dose in this situation what’s the reason for that? I presume that it is because although it kills bad bacteria perhaps it also kills some good bacteria?
14TB

YKS club member
"RE: Virkon" 9:51pm Saturday 12th Oct | message edited 2 times


joined: 6th Mar 10
last here: 9:00am Today
posts: 6369
from: SOUTH YORKS

Paul,

I believe it can be safely re-dosed full strength weekly with no adverse effect. But see below for Virkon info.

Virkon Aquatic.

Virkon has been used in animal husbandry for some 20 years or so, but is a relatively new medication as far as the Koi industry is concerned. Why are we always the last ones to catch on? Like potassium and chloramine T, Virkon is a powerful oxidising agent, but there the similarity ends.

Virkon is a ‘modern’ disinfectant that is widely used in all forms of livestock husbandry, including pigs, cattle and sheep. It is also the disinfectant of choice in the fight against bird flu and foot and mouth disease, is licensed for use with all livestock and recommended by DEFRA (formerly MAFF).

Not only is Virkon a very potent disinfectant, but is less toxic than either potassium or chloramine T. It can be used in many different ways, as a foot dip, bath or spray to disinfect all kinds of equipment, buildings cars and clothing and can of course be used in direct contact with the animal in question to kill pathogens.

The manufacturers claim that Virkon is very effective against a range of viruses as well as bacteria, and in the Koi industry this will obviously be of great interest.

Virkon is effective at all temperature ranges from 4 deg C upwards, and is also long lasting in terms of its disinfecting action. Virkon only loses 10% of its effectiveness in water after 7 days. It is non toxic to humans when mixed, although like Chloramine T it is a respiratory irritant in its raw powder form.

When it does break down in water it leaves no harmful residues, so is kinder to the environment, and lastly it is licensed for use with fish, so will be readily and widely available.

Dose: between 2 and 4 grams per ton (220 gallons) see below. Dose is dependent on water hardness. Can also be used as a drip fed constant dose to keep bacteria count low. Can be used with salt at 1/2oz per gallon.

Water Hardness: Terms and Conversion mg/l CaCO3 German Degrees of Hardness Described as Dose per 220 gallons

0 - 50 0 - 3 soft 2gm
50 - 100 03-06 fairly soft 2.5gm
100 - 200 06-12 slightly hard 3gm
200 - 300 12-18 moderately hard 3.5gm
300 - 540 18 - 30 hard 4gm
540 + 30 + very hard 4gm
1 degree of hardness = approx 18 mg/l CaCO3

Virkon Aquatic is available in a handy tablet form to make dosing easy, as well as in the raw powder form.

more great info here copy and paste the link:-
https://www.koicarp.org.uk/medications%20and%20their%20uses.htm#Virkon_Aquatic




Tony




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