F Fish2233 New member Aug 16, 2017 #1 My niece had sharpie highlighter all over her hands and I looked over and she was putting her hands in the saltwater tank! Is this poisonous?
My niece had sharpie highlighter all over her hands and I looked over and she was putting her hands in the saltwater tank! Is this poisonous?
F Fish2233 New member Aug 16, 2017 #3 The sharpie highlighter started combining into the water and some of the fish started eating it.
Is this poisonous?
