So I've read about and performed the acid test on some slate that I want to put into my tanks. Instead of putting a drop on the slate, I dropped a piece of the slate into a jar of Muriatic Acid.
- Sample #1 fizzed, bubbled and sizzled like crazy.
- Sample #2 & #3 went in, and created some bubbles. It was more like you could see little bubbles forming on the bottom of the pieces of slate, combining into larger bubbles and then floating to the top.
- Sample #4 went in and it looked like I had just dropped it into a glass of water, absolutely nothing.