I "found" some rocks outside in a neighbours garden
that I thought where river rocks they look smooth and rounded which should mean they where smoothed out by water ? I turned one over to see that the bottom was covered with brown stuff that looks like rust , does this mean that the rocks has some metal content? I also would like to know if anyone has some different techniques to test rocks to see if they are aquarium safe
thanks to all that reply
-ctenopoma
that I thought where river rocks they look smooth and rounded which should mean they where smoothed out by water ? I turned one over to see that the bottom was covered with brown stuff that looks like rust , does this mean that the rocks has some metal content? I also would like to know if anyone has some different techniques to test rocks to see if they are aquarium safethanks to all that reply
-ctenopoma
