Viresco Koi

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Aqua Viresco is a totally natural solution to blanket weed in your garden pond water. Not only combating blanket weed, Aqua Viresco also contains a sludge remover.A non-chemical, totally biological treatment.

It is a micro-organism product that has a number of benefits when used in your pond:

  • Suppresses blanket weed and algae bloom by removing the nutrients on which they feed. It does this by removing nitrate from your pond water down to zero. When it reaches zero, blanketweed and algae blooms will die from starvation.
  • Digests the organic wastes found on the bottom and side of your pond which can be detrimental to the health of your fish.Improves the digestion and general health of your fish by improving food uptake and reducing disease.
  • Reduces the phosphate levels in your pond water. 

Aqua Viresco has a long shelf life.
Available in three sizes -

  • 5g (sufficient to treat 3,000 gallons / 13,6000 litres) 
  • 10g (sufficient to treat 6,000 gallons / 27,250 litres) 
  • and 25g (sufficient to treat 15,000 gallons / 67,500 litres).

Select Your Options

  • Viresco Koi 5g (AVKIO5)


  • Viresco Koi 10g (AVKIO10)


  • Viresco Koi 25g (AVKOI25)


Delivery Info

FREE Mainland UK* Delivery on orders over £40.00.
or £4.95 Delivery on Orders Under £40.00.
 £6.95 Next Working Day Delivery.

 *Additional delivery charges may apply to the following destinations: Isle of Wight, Isles of Scilly, Northern Ireland, Republic of Ireland and Scottish Highlands. Please contact us for a customised delivery quote.


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