Agree with guys. My professional friend and I only use GE1 - the label on that says either "safe for aquarium use" (IIRC they removed it) or "safe for incidental exposure to food or drinking water" or some such language.
I strongly recommend reading the label attentively and entirely.
It's not studied well in our circles but anti-mold agents are "a priori" toxic to fish, maybe be even "de facto".