iron stone

[The Barb Keeper]

Plz look in my pics I got these brown stones from a friend after researching I've come to the conclusion it's iron stone I removed them cuz I'm not exactly sure n they seemed to b releasing a gas.

 

[Wroberson]

You can test the rock with a magnet. You might have a meteorite.

 

[The Barb Keeper]

You can test the rock with a magnet. You might have a meteorite.

And if that's the case?

 

[Aqua Marine]

If you do I don't think you should because like rocks that at made for there tank and you will not find that type of rock in water