Colombo Morenicol Lernex Pro with Praziquantel & Nitroscanate (against resistance)

Article number: 05020357
Delivery time: 1-3 DAYS

Colombo Morenicol Lernex Pro


Due to regulations, we unfortunately cannot send Colombo products to the United Kingdom.

We advice to order Fish Pharma Triclam or Fish Pharma Triclam Plus ( we can ship Fish Pharma Triclam to UK )


Lernex Pro is effective against resistant (compared to regular treatment) skin / gill worms & internal worms.

Lernex pro contains, among other things, the active substance in resistance: Praziquantel & Nitroscanate.


Morenicol Lernex Pro has been developed for the treatment of resistant skin and gill worms in ornamental fish. Lernex Pro is based on the latest scientific knowledge and contains high-quality anti-worms, such as Nitroscanate and Flubendazole, against which no resistance has yet been built up.

Lernex Pro is therefore effective in the treatment of resistant skin worms (Gyrodactylus) and
gill flukes (Dactylogyrus). The presence of these parasites can only be determined under the microscope.

Anchor worms, carp lice and leeches cannot be treated with Lernex Pro, the product Lernex (without Pro) is very suitable for this.



Symptoms of an infestation with these parasites are:

  • Listlessness.
  • Sanding.
  • To jump.
  • A decreased appetite.
  • Lie on the bottom.
  • Pinched fins.
  • Use 1 gill instead of 2.


Content calculation:


Calculate the contents of the pond as best as possible: length x width x average depth in decimeters = content in liters.



Water quality:

Good water quality is essential for optimal functioning of Morenicol Lernex Pro and rapid healing of sick fish. Therefore, always test the water quality before and after treatment and correct where necessary.




1 ml per 20 liters of pond water. If necessary, the treatment can be repeated after 14 days. Provide good aeration, so that your fish have sufficient oxygen at all times. The required amount of Lernex Pro can be measured with the supplied measuring cup. This quantity must be slowly poured into the pond water in a place where there is a lot of flow, eg the outflow of the pump or filter. Do not filter over coal or zeolite; Keep UV lamps and ozone devices switched off for up to 1 week after the last administration.


With gill flukes treat 3 times with an interval of:

  • 20 degrees - 5 days.
  • 15 degrees - 7 days.
  • 10 degrees -10 days.
  • 4-6 degrees - 13 days.




48 hours after the last administration of Lernex Pro use the product Colombo Fish Protect, this protects the mucous membrane and binds remnants of the product. By adding Colombo Vita-Spray to the feed, the healing is maximally supported.





  • After adding Lernex Pro, the activity of the parasites is initially increased. This irritates the fish that can shoot through the water and even jump out of the pond. Therefore keep a close eye on the fish during and after the treatment! Cover the pond with a net if possible.
  • Only for use with ornamental fish in ponds.
  • Keep out of reach of children, in the box between 4 and 32 ° C.
  • Avoid contact with eyes and skin.
  • Close the lid properly.
  • Wash hands after use.
  • Effect on other animals: Little is known about the effect on other aquatic animals, such as frogs and salamanders.
  • Pets and birds that drink from the pond with these resources in it. As a rule, if fish can swim in it, it can be said that it is harmless for animals that only drink from it. Nevertheless, it makes sense to just feed pets (e.g. dogs and cats) used to drinking from the pond during the cure.






Administered agents will disappear in ponds by natural processes, such as oxidation and breakdown by bacteria.





The effect of a combination with other agents is unknown. The use of more than 2 preparations in a combination is at your own risk.


Water temperature:

Fish parasites are cold-blooded, which means that, at lower temperatures, their metabolism decreases. Below 10 ° C, Morenicol Lernex Pro is insufficiently absorbed by the parasite. If possible, we recommend increasing the water temperature to improve absorption.



Skin and gill worms:


Skin and gill worms are flat sucking worms of 0.3-0.5 mm in size, which nowadays regularly occur on our pond fish.

Gyrodactyl is the skin worm that is viviparous and can therefore reproduce quickly and massively. Due to the creep on the skin, it thickens and a gray slimy layer is formed.


The gill worm is called Dactylogyrus and is egg-laying. It damages and irritates the gills, causing them to thicken and stop functioning properly. The fish scour their gill covers on plants and stones. When deteriorating, they swim through tightness with open gill covers and may even die. Recently, more and more cases have become known in which especially skin worms (Gyrodactylus) were resistant to commonly used agents, such as triclabendazole, levamisole, fenbendazole and piperazine.

Colombo has therefore, after extensive research, found a new anti-worm agent for fish that is effective against resistant worms: Nitroscanate.

Nitroscanate is effective with single administration even at very low concentrations.

Nitroscanate has been combined with Praziquantel and Flubendazole in a unique medicine to increase its effectiveness and thereby also reduce the chance of resistance.


Application of this drug is at your own risk. Consult the package leaflet before adding to the pond.



Available in:

  • 1000 ml (powder)
  • 2500 ml (powder)





This worm is viviparous (that is, gives birth to live boy) and you can see the boy sitting in the belly. (Note the brackets in the belly)

This worm is easily recognizable under the microscope at a magnification from 50 times.



YOUTUBE VIDEO Gill worm ( Dactylogyrus )

This worm is egg-laying (you don't see a boy in the belly). Furthermore, this worm has 4 eye spots that are visible.

This worm is easily recognizable under the microscope at a magnification from 50 times.



| Ronald

Zeer goed product tegen de kieuw en huidworm...bij mij in ieder geval goed aangeslagen

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