from what I have seen most wood if fully dried is suitable, aside of pine or other wood that have a lot of sap. I have used pieces from a rosemary bush that were dried at least 6 months outside before I began the cleaning/prep process. These have been fine in all the tanks I have used them in.
So I have one and it grew around the rock and is awsome and my favorite wood I have seen but it has been outside for about 8 or so years... at least. Here it rains a good 80 percent of the years like it did today and I have water heating up... is it still okay to boil it until the tannins are realeased and then let it dry or what ever and pop her in? It was in a fresh water river and is water logged I believe if that plays a role and just to be sure it is dead
The best medicine in your medicine cabinet is clean water.
38 gallon: 4 kribs, 10-12 rummy nose tetras, , 2 cories, 1 BN pleco, 4 kuhlis
Do!aqua: not set up yet