Originally Posted by Boredomb
I have Mopani wood now (though its not whats in my current tank). It use to be all I could get locally. I too boiled it on several occasions. I never once saw tannins as bad as what yours made. Malaysian wood is much much better wood. It doesn't produce tannins at all or if it does its so little you can't tell. The one thing you really have to worry about with Mopani wood is fungus. No matter how much you boil it it can still have it and show up later on down the road. I had some that showed up weeks later after being in the tank.
I'm pretty sure all the new wood I purchased was Malaysian, which would explain why I never had tannin leakage despite not boiling. I'm amazed at what came out of the piece JDM boiled.
I have a super low PITA tolerance, God hasn't made a piece of wood nice enough to motivate me to boil it for 10 hours.
On the one hand, I want to say DON'T DRINK THE TEA! But another part of me is curious.