Another weapon in your arsenal against fish parasites.
Fenbendazole is a good weapon for an aquarists to have in his or her arsenal.  This medication will treat a variety of internal parasites from your fish.<br /><br />As a previous reviewer has stated, thorough treatment is required when fighting some of the more persistent internal parasites, like roundworms.  Start the treatment as soon as you suspect internal parasites.  Your chances, the fish chances, are much better if you start the treatment while they are still eating.  If you wait until after they stop eating, then you are limited to medicating the water in the tank.  The best way is to also mix fenbendazole with the fish food and feed it to the fish in conjunction with treating the water.<br /><br />The fish will be more likely to accept the medication if you mix it with frozen food.  You can thaw frozen shrimp and soak it in fenbendazole.  For added efficiency, you can use a binder like Seachem focus to help draw the medication into the food.  You can also try mixing with flakes, but the flakes will get soggy and messy.<br /><br />The main value of this medication to me is its use as a preventative.  I feed this to newly-acquired fish.  Basically, I make the assumption that the new fish are infected and treat accordingly.  This medication will not harm the fish and it will clear away internal parasites that may be hitching a ride on your new fish.  In this manner, in the event that the fish are exposed to a stressor later on, at least they will not succumb to intestinal worms.  Even if the fish do get stressed, if there are no low-level camallanus worm infection in any of the fish in the tank, they will not get infected.<br /><br />Some hobbyists use canine de-wormer on their fish.  However, this is not an expensive product and you will be better off simply using the fenbendazole that is already packaged for use with tropical fish.  This will save you from having to buy canine tablets and having to ground it into a fine powder.
Rating: 5 stars