I am always a little cautious about it .I have it in my cynops tank but axolotl seem to be in a different field, I would say. I guess I would compare it to going from a fresh water tank to a marine tank without the corals add plants and then its they same I have a lot of expertise, I guess.I am not sure these are going to be my first axies. I like the idea of boiling it but I do not even want to risk it any more, plus I am always at work and barely have the time. I will just do rocks and a pvc pipe, which I heard was fine. I have sand as a substrate.I was trying to go as natural as possible.I mean I am putting them in a 90 gallon surflline. I heard the more room the better with them so I am just taking some cautionary steps. I had the tank with the wood in there for a couple of days now with all needed measurements of water quality and what no,t but I am going to change most of that water today and take the wood out.