I think I got Hydra's in my tank and possible another Bug - Plz Help

  • We are currently upgrading MFK. thanks! -neo
I aint sure if they are , then again I am not 100% sure what they were I tore down the tank that had them and am in the process of getting it going again , the white slug looking things had a tan head on them I am really hoping that I got it taken care of now.
 
Technically they are not bugs....Cnidarians, Gastropods and well IDK about Limpets Echinoderm? But I heard CopperSafe but....No Inverts in the tank ever, I have a whole budding Colony of Hydra on my backcorner wall of my 55gal I just scrape them off when they get on the front or sides......
 
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