Lernex Pro with Praziquantel & Nitroscanate (against resistance)

Article number: 05020357
Delivery time: 1-3 DAYS

Colombo Morenicol Lernex Pro

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

Lernex pro contains the active ingredient 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-worm agents, such as Nitroscanate and Flubendazole, to which resistance has not yet been built up.

Lernex Pro is therefore effective in the treatment of resistant skin worms (Gyrodactylus) and
gill worms (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 Lernex product (without Pro) is very suitable for this.



Symptoms of infection with these parasites are:

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


Content calculation:


Calculate the content of the pond as well 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 the treatment and correct where necessary.




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


For gill worm, treat 3 x with an interval of:


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



After treatment:

48 hours after the last administration of Lernex Pro use the product Colombo Fish Protect, this protects the mucous membrane and 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 it can be said that if fish can swim in it, it is harmless to animals that only drink from it. Nevertheless, it is logical to give pets (eg dogs and cats) who are used to drinking from the pond, just a bowl of water during the course of treatment.






Administered agents will naturally disappear in ponds due to natural processes such as oxidation and degradation 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 their metabolism decreases at lower temperatures. Below 10 ° C, Morenicol Lernex Pro is not sufficiently absorbed by the parasite. If possible, we recommend raising the water temperature to improve absorption.



Skin and gill worms:


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

Gyrodactylus is the skin worm that gives birth and can therefore reproduce quickly and massively. Due to the creep on the skin, it thickens and a gray, slimy layer is created.


The Gillworm is called Dactylogyrus and is egg laying. It damages and irritates the gills, causing them to thicken and no longer function properly. The fish scour their curd lids on plants and stones. In the event of deterioration, they swim because of tightness with open head covers and may even die. More and more cases have recently become known in which skin worms (Gyrodactylus) in particular were resistant to commonly used agents such as, for example, triclabendazole, levamisole, fenbendazole and piperazine.

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

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

To increase effectiveness and thereby also reduce the chance of resistance, Nitroscanate is combined with Praziquantel and Flubendazole in a unique medicine.


Application of this medication is at your own risk. For addition to the pond, first consult the package leaflet.



Available in:

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





This worm is life -giving (that is, living boy gives birth) and you can see the boy sitting in the belly (note the hooks in the belly)

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




This worm is egg-laying (you won'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 08-08-2014 21:18

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

5 stars based on 1 reviews
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