a friend of mine has a creek behind his house with literally thousands of bricks in the water and along the shore... they have been there for at least 10 years (from what i know) and the water is clear and fast moving... i was wondering if i could add some of these to the new 55 gallon im getting ( if i clean them of course).... im not sure how it will look, possibly stupid, but i guess its worth a shot.. my only concern here is wether they will leach something into the tank water or compromise my water chemistry in some way, any advice would be appreciated thanks!

