Hi..

Putting a Hydra eater in the tank temporarily seems ideal,

1: I'm no friend of function animal tanks!

2: Macropodus opercularis: I've been keeping them for
(about) 30 years now. They do not really like eating hydra!

3: M. opercularis and Gouramis need special tanks.

4: Hydra - what kind of hydra (color!) do you have?

5: Hydra generally eat micro organism and generally multiply
in tanks with micro organism.

the Hydra. I read on the Krib that mystery snails will
eat Hydra.

6: Mystery snails? I only know "normal" snails! ;-)

--
cu
Marco