David Sanchez <barbax2@yahoo.com> wrote: <<<< P.S. fluke tabs have a very good active ingrediant(though I can not remember its name now) and is another very good option. There was another message on the list that mentioned it.>>>>> FT contains mebendazole (an analogue of flubendazole, it should kill flukes and nematodes, including their eggs, and tapeworms) and metrifonate, which acts very quickly on adult flukes, but does not kill the eggs. I use FT in a single, full dose, and then repeat a week later, hoping that if some eggs escaped the first treatment, the second punch a week later will eliminate the newly hatched larvae before they can lay new eggs. When FT works, the positive effects are normally immediate. The second dose is always at higher risk of causing signs of toxicity (faded colors, nervousness, headstanding), probably due to a very high content in metrifonate. Lots of people get very scared by that, but in reality these toxic effects are normally only temporary, and often well worth the benefits provided by the drug. I like more flubenol or praziquantel, but for many people the easy availability of FT and its good price and ease of use, represent a great option. I also agree with you that in tanks with substrate the chances of lasting success are smaller than in bare ones. Do you have any info on how long fluke eggs can stay dormant in a fish-free tank? The medication mentioned, I think, by Diane is a sulfa antibiotics mix, that in this situation would probably be useless, and even detrimental. Dionigi Maladorno dionigi.maladorno@roche.com This message presents personal opinions which are not necessarily those of my employer.