Elmers Painters Pens True Acrylic Paint

[macman60]

These pens say they're filled with real acrylic paint and that their Safe and
Non_Toxic For Wood, Pottery, Ceramic, Glass, Metal, Paper, Plastic,
Fabrics and More...

I would believe these Pens are Safe For Aquarium Use

Have any of you used these inside of an aquarium

Thanks Mike