I bought some pieces of wood made for a reptile habitat.. they were just soo gorgeous. I have read about curing driftwood and such but would this wood be safe in an aquarium after it has been boiled ect? It is called riverwood? also it says it is heat treated. Also I wouldnt mind the ph lowering affects as my local water is very hard allkaline. But I also don't want brown water.THANKS in advance.