Check the wood like above... And boil it at least once or twice to kill the bacteria. Then i just throw ot it... If u dont soak it or anything then it will leach out tannins, they are not bad for yoir tank as said above. It will turn your color a tea brown the darkness depends this can be helped with water changes and carbon. It will lower your ph but this can be benificial to some fish... Check the ph requirements of your fish... It will more then likely float for a while since it hasent been factory treated or whatever. You can soak it on the bathtub till ot sinks... If you dont wank the tannins soaking it can also leach out the first big surge of the tannins. It wont sop leaching for a long time but once it gets aclimated to the water it will not leach ass much... Pics of ur piece please.
he said [h=2]Cleaning drift wood[/h]