Rocks

[SouthernRebel]

Ok I got my rocks out of a ditch the other day for my mbuna tank. Some of the rocks have concrete on them, is that ok. Also what if there are some dirt left on them that won't come off or some green stuff. Is this ok. Also I used a pressure washer to wash them.

 

[rixy]

personally,i wouldnt use them with dirt and concrete on,but,its up to you.