I live in the Pacific Northwest, and was excited to see I could use Rhoddy for decorations, but I am confused about the Saprolegnia comment (and worried, now). Are you saying this protozoa (mold/fungi) is a normal inhabitant of Rhoddy wood? Or is that true of any wood you introduce into an aquarium? Can you clarify and provide more discussion on this?Rhododendron and Kalmia (forget the common name) and two poisonous shrubs but make excellent (and safe) wood after you remove the bark and boil.. and boil and boil and boil. Saprolegnia grows at first.
Looks similar to redmoor root wood/ "branch wood" by ADA.