Nerite snails, fenbendazole and reintroduction

[European Giant]

Hi, 

 

I treated a tank for hydra 5months ago with fenbendazole (dog dewormer).

I know it's lethal for nerite snails, so they've been living elsewhere for a while. 

Does anyone have any experiences of reintroducing nerites to a tank post fenbendazole and any advice on how long to give it before adding them and anything else I should do to the tank.

 

Thanks! 

[lefty o]

i have no experience with that, but i would say how long depends on how many water changes, and if any carbon has been used to get the chemical out of the aquarium.

[Frank]

I worry about this, as I will be needing to do some treatment.

Specifically, I wonder about things that may have absorbed the treatment, are still around, and the snails then eat.