Is Flagstone safe?
I have ALOT of natural flagstone available that i could use to make some caves or just add to my aquarium. I was searching the internet and couldnt really find an answer when it came to flagstone. I am wondering if anyone has used flagstone before in their aquarium or if it is a definite no. I could always soak it in some water and see if it raises the ph, i just wanted to ask first and see if anyone had some answers. Thanks a lot!