Lernex Pro with Praziquantel (against resistance)

Article number: 05020357
Delivery time: 1-3 DAYS

Colombo Morenicol Lernex Pro

Lernex Pro is active against resistant (compared to regular treatment) skin / gill worms, internal worms, leeches, fish lice and anchor worms. Lernex pro contains, among other things, the active substance in resistance: Praziquantel.


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 antiworm agents, such as Nitroscanate and Flubendazole against which resistance has not yet been established.

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.



Symptoms of infection with these parasites are:

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



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



Content calculation:


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



Water quality:

For optimal functioning of Morenicol Lernex Pro and a quick cure of sick fish, good water quality is essential. 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. Provide good 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 slowly poured into the pond water at a location with a lot of flow, eg the outflow of the pump or filter. Do not filter over carbon or zeolite; Keep UV lamps and ozone devices switched off for up to 1 week after the last administration.



After treatment:

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





  • After addition of Lernex Pro, the activity of the parasites is increased in the first instance. This irritates the fish that can shoot through the water and even jump out of the pond. Keep an 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, keep in the box between 4 and 32 ° C.
  • Avoid contact with eyes and skin.
  • Close the lid well.
  • 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 for animals who only drink from it. Nonetheless, it is logical to allow pets (eg dogs and cats) who are used to drinking from the pond to simply give a container of water during the course.






Means of administration will naturally disappear in ponds through natural processes such as oxidation and degradation by bacteria.





The effect of a combination with other means is not known. 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 suction worms of 0.3-0.5 mm in size, which nowadays regularly occur on our pond fish.

Gyrodactylus 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 develops.


The gill worm 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 gill covers from plants and stones. When they deteriorate, they swim through trouble with open gill covers and can 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 for single doses at very low concentrations.

In order to increase the 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. Consult the package leaflet before adding to the pond.


Available in:

  • 1000 ml (powder)
  • 2500 ml (powder)
| 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
Please accept cookies to help us improve this website Is this OK? Yes No More on cookies »