Sorry to jump right to business with my first post but very worried about the new tank I'm setting up. Everything's good so far except for the contradicting opinions floating around about pet smart's all things living driftwood. I found 2 really good looking pieces and I either read "it's grape wood don't use it" or "its mopani driftwood it's fine" I boiled it for four hours, got heavy tannins, now I'm soaking it. Please give me some input, is it a waste of time?