Dewormer and Daphnia
I've been reading through the forums for about a year and haven't found a definitive answer for this. I have a dirted 5g shrimp tank with a Planaria problem and I'm thinking about dosing with Fenbendazole to help keep my shrimp and MTS alive (I've already lost a yellow rabbit snail). I rarely feed the tank because I only have around a dozen juvenile shrimp (I suspect the adults either died from natural causes or Planaria), some mts and bladder snails, and a colony of Simocephalus vetulus (clinging Daphnia) that I use to supplement my feeding for my primary hi-tech 20L.
Does anyone know if Fenbendazole is lethal for Daphnia? I figured since they are crustaceans it might not be, but they have such a small biomass I feel like it could very well harm or kill them. The only scholarly article I've found so far is Mixture toxicity of flubendazole and fenbendazole to Daphnia magna (Alan Puckowski et al., 2017), where they found that both "FLU and FEN have been found to have a strong impact on an environmentally important non-target organism - Daphnia magna".
To me "strong impact" means high death rate, but does anyone have any first-hand experience with this that could shed some more light on the situation?