Ken Laidlaw <K.Laidlaw@roe.ac.uk> wrote: <<<< > Your diagnosis seems right. As Erik mentioned, piperazine (available > also for aquarium use from, if I am not wrong, Aquatronics) is one > choice. For nematodes this was unaffective in my experience. I'm sure piperazine will kill them but I think my difficulty was getting the correct doseage into the fish.>>>>> Thanks for the interesting info. <<<<I also tried Fluke Tabs which I bought while on business in the US. They did not work and caused terrible trauma for the few catfish (Peckoltia, Corydoras) that I had in the tank.>>>>>>>> FT contains an unknown dose of mebendazole, which in theory is active on nematodes. So, reports like yours are interesting because they suggest that the dose may not be adequate. In my experience, the stress caused by FT (which is due to the metrifonate content) is reversible, and a price worth to pay when efficacy is achieved (apparently, not your case). Did you use it as recommended (1 tablet/10 gal, once)? It would be interesting to hear from people that have used flubendazole, which is very well tolerated. <<<<In the end the Levamisole Hydrochloride worked a treat.>>>> That's why I saved your post in my "Things that are worth" file. """""Joe Incognito""""""" (yes, him in person) wrote: <<<<<Now richard, I wouldn't tell you to illegal, but you may get it faster by driving to Niagara Falls. I used to go to the pet shop in Ft. Erie to get Dylox, (by brand name of Dyacidex ) for certain angelfish parasites. Speaking of which, maybe dylox would work, if it is still available there.>>>>>> I am not 100% sure, but I think that in the US formulations of levamisole with known concentrations are available only through vets. Another source that could be checked are mail order catalogs of products for dogs and cats. Anything there? Dylox (metrifonate) will not work on nematodes. Dionigi Maladorno dionigi.maladorno@roche.com This message presents personal opinions which are not necessarily those of my employer.