Quick question about salt..
 

Hi everybody! I work at a hardware store and just had a customer ask for Epsom salt, he got 30 lbs of it and just curious I asked him what he was using it for... He said he was using it instead of aquarium salt.... Is this safe?!? I asked him where he heard he could do that and he said Petco... I told him that I personally would research it a little more just in case.

No way. Epsom salt isn't salt. it's magnesium sulphate.