From the article: Can I Use Outdoor Gravel in My Aquarium?
Did you ever see a rock by the side of the road that you wanted to put in your aquarium? Perhaps you even stopped and took a look, then decided you didn't want to risk it. Some outdoor rocks and gravel are safe for aquarium use, while others are not. Have you used rocks from the great outdoors? Share your story with the us.
Are they safe?
Rock from along the highway
- Some time ago I used to make rock backgrounds for aqs. I collected the slate like rock from road cuts where ever I traveled, including bringing a suitcase full from Alaska. Never had any negative effects, just beautiful tanks.
- —Guest Greg Hall
using outside rocks
- I'd be very hesitant of using your average stone from the side of the road /ditch. I myself ended up with a massive algae problem. Although I did test for metals using vinegar, algae I didn't consider. Good luck if you like that cool rock and have to have it. lol
- —Guest WarEagle
