Mar 25, 2014 #1 C cauterox04 Aquarium Advice Activist Joined Feb 18, 2014 Messages 191 I found some slate out side would it be okay if I put it in my freshwater fish tank
Mar 25, 2014 #2 Fishfanboy Aquarium Advice Freak Joined Feb 28, 2014 Messages 264 Location Oregon Yes but make sure u get it really clean