Can the hemp hurt my cat?/ Serious Answers to serious question!!!!?

I stored my marijuana in the bottom of my fish tank and the bag it was in ruptured, long story short the pot leaked into the fish tank, and my fish got high, that wouldn't be to Big of a problem except my cat ate one of the fish and is drinking the water from the fish tank now, what should i do to get the pot out of my fish tank, and can the hemp hurt my cat???