- Nov 20, 2002
How toxic is a penny to an octopus? I looked in Lil P's tank and there sitting out in the open, starting to corrode is a bright penny. I've been watching Lil P constantly since I let him out and never noticed anything, even when I vacumed the gravel for a waterchange. I added a large bubble filter with carbon right after I found the penny. Of course, my little six year old has no clue!!!