Disinfecting agent;

Disinfecting agent, which works very effectively against skin parasites, influsorians – trichodina, tetrahymena.

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Product Description


5 – 10 ml per 100 l water. We strongly recommend to test the resistance of fish in separated tank with lower concentration.


Increase air circulation. Then exchange half-volume water in the aquarium.


Volume / Weight Packing EAN
ml g oz ks
20  20  0,68  25  8594000251880
 100  100  3,38  10  8594000250401
 250  250  8,45  5  8594000251484

Additional Information


The use of FORMOL in aquariums was inspired by its use in cold-water fishing. This very strong and effective disinfecting agent must be used with maximum precision, taking into account the specifications of your water tank – pH, water hardness, temperature, water oxidation, etc.

This agent should not be used by beginners or children. For an experienced aquarist, FORMOL is a mighty weapon to fight infections by Tatrahymena, Trichodina, Ichthyophthirius Multifiliis (“white-spot disease”), Costia, Chilodonella, and also by skin and gill worms.

It is also highly effective at treating uncontrollable propagation of parasite crayfish (Argulus – Fishlouse) or Hydra introduced in the aquarium together with live food.

Professional aquarists should test the sensitiveness of individual fish species in the specific conditions of their aquarium.

In critical months with invasive occurrence of Trichodina and Tetrahymena, FORMOL is actually the only weapon for the producers of tetra fish (even for 10-days-old spawn).

In such cases, it is recommended to try 1-2 drops per 1 litre of growth water. It is also advisable to use 1-2 drops per 1 litre of spawning-tank water with a pair or a group of brood fish, as they are the carriers of these predacious infusorian cultures.


Trichodina, Tetrahymena, Ichthyophthirius Multifiliis, Costia, Chilodonella, limited use with some species of Dactlogyrus, Argulus and Hydra.


Determine the type of problem.

Always test the sensitiveness of individual fish or at least of the most fragile species.

Always check that the agent is not turbid – it would have a limited effect.

Always observe the instructions on the container label. Do not arbitrarily increase the treatment dose! Throughout the whole period of treatment, provide intense air circulation and do not feed the fish!

In case of accidental overdose, change 1/2 of the aquarium water volume immediately.

Store the product at room temperature in a dark place, never in a refrigerator, and always out of the reach of children!

Always observe hygienic rules.

After the treatment is finished, change 1/2 of the aquarium water volume and apply appropriate doses of “BIOFILTR” and “START+” in order to restore biological balance in the tank.

After a few more days, apply an appropriate dose of ALOE GEL.


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