Rock ?

[beerad555]

I found some really cool rocks to put in my freshwater tank and have heard of ways to test them to find out if they are safe to use and forgot how to do that . Can someone give me suggestions.Thanks

 

[DIDYSIS]

Post some pics of the rocks. I just clean then off well can sometimes boil them sometimes use a little bleach.

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[Redbellypiranha]

soak em in a sink with bleach and water and let sit over night. But you wanna make sure you get a i.d on those rocks because they could mess with your ph

 

[Llamalord]

Drop some vinegar onto the rock, if it bubbles it'll likely dissolve in the aquarium,potentially releasing harmful minerals.

 

[eklikewhoa]

I thought the vinegar test was to just test if the rock consist of calcite?

Drops of vinegar will bubble or fizz if it consist of calcite and IIRC all it will do is buffer/increase hardness.
I use a lot of different rocks and all I do is avoid rocks like sandstone or anything that will flake or powder when scratches, also put it through a good pressure wash and soaking. Bleaching works but make sure you dry it out completely and use a good de-chlor before using. Boiling works too with smaller pieces of rock.

 

[beerad555]

thanks