Rocks in aquarium

[james80000]

Hi all,
Well I live in the country side(kinda) here in Galway in Ireland. About 6 years ago, we started to build a house here. We got in a rock breaker to level off the site. However the rocks are still about the garden. Im not sure what kind of rock it is. (however, where we live, it is probably sedimentary-maybe limestone). Is it ok for me to go and shape these rocks and put them in the tank??? If i wash them of course.

 

[Rose]

I would test them first before I put them in the tank. By testing I mean pour some vinegar over the rocks and if they fizz, bubble or do anything other than just sit there don't use them. It means there is something in the rock that can hurt/ kill your fish if you use them. If they don't do anything boil them and soak them and boil them and reapeat many many many many many times over to make sure you got all the nasty stuff off of them. Rose