as above, im working for a race team atm and they throw out alot of pistons, liners ect i was thinking about using some of these as feature in my tank,
obviously i would wash it all, probably boil it all just to make sure, but is there any metals/chemicals that will kill my fish,
obviously i would wash it all, probably boil it all just to make sure, but is there any metals/chemicals that will kill my fish,