If i get rocks from the actual sea......

[Aquaboi]

If i get rocks from the actual ocean and put em in my tank is there a chance my fish can become sick or can the water can get contaminated ?

 

[spoonman]

There is a good chance. It could also be illegal in some areas. Especially since you would be getting them near the shore where all the pollution is. If you can and it is legal, you would need to clean them, defeating the purpose of getting them from the ocean in my opinion.

 

[Aquaboi]

Valid point, yeah i figured it wouldnt be a good idea, and yeah i heard something about it being illegal but i didnt know for all rocks i thought just for coral