[Arno Beißner]

Thank you for info and offer, Peter and Bernd.
Yesterday i used panacur (powder) for horses and cows (flubendazol).
Dissolved in water before.
Panacur for horses and cows – it is cheaper than for dogs and cats 😉
0,5 mg flubendazol pro liter in the phoenicurus tank and the boraras tank.
The hydra is gone now.
The larves are ok at time. (Photo)