Rock for aquarium identify desperate for help

[Blonde54]

Desperate for someone to tell me what type of rock this is so I can determine if it is safe or not.

 

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[smokeythecat]

Looks like gabbro or granite, both intrusive igneous rocks. Both will have metals in them, although in small amounts. These ring up as "hot rocks" on a lot of detectors.

 

[Blonde54]

Thank you so much!

 

[ToddsPoint]

I used to raise tropical fish. You should boil any rocks and let them cool before you put them in your tank. That will kill any bad stuff that might effect your fish. To me the rocks look like red granite, diorite, and diabase. All very common where I live. Gary

 

[Blonde54]

I have cleaned the rocks! Would you put these in a tropical tank?

 

[DDancer]

Sure, they should be safe for any tank after cleaning. I don't see any metals or pyrites that'd be a concern and granitic materials are pretty stable.

 

[Steuss]

I have cleaned the rocks! Would you put these in a tropical tank?

Unless you are doing a tank with more finicky species (like Discus, or Rams), I see no reason not to add them. If for some unseen reason they are a problem, you'll most likely find out during the bacterial colonizing phase of the tank, so at most you'll maybe lose one or two ammonia seeding fish on the front end.