i see alot of wood in tanks and wandered what types of wood are safe for tanks, is it possible to cut my own, or does it have to be special wood that is treated or dried first
bog or drift wood often means "seasoned" wood.
bog wood will, or should have been, buried in earth of, Err, Bog. hopefully for many years.
incidentally, soaking it for a week wont even touch the tannins it releases. more often than not, it will take over a year for tannins to become, unobtrusive.
drift wood should have, Err, drifted for a long time. time enough for all the sap to have been driven out (as with bog wood).
both types of wood are then dried, before sale.
I'm unsure what type of wood bog wood tends to be. but i have a large chunk of oak in my tank, and that qualify's. lol.
Mapani is also sold for your aquarium. on the whole its a harder wood than most 'bog woods', though. and i think its just dried fore sale. not dug up from a bog.
drift wood can be any type. but i guess it would tend to be harder wood. as softer wood would be broken down.
if you are buying form a LFS or trusted vendor. just get the one you like.
I have found that Mapani tends to give off more tannins (more noticeable?). than plain Bog wood.
drift wood, in my limited experience, gives off none. though this could depend on the type of wood, i guess.