I was able to complete the PP treatments to achieve the 4 hr mark, I examined the wood and could not find rotting spots. The wood was firm as I poked and prodded it with my tweezers and scissors. I could not visually see any worm like creatures underneath.
The condition has been worsening for the Rams. They are all over all of them, despite the PP treatments and 3 rounds of API General Cure (two this past week)
Interestingly it doesn't seem to have gotten worse for the cardinal tetras, although they still have parasites. The rams have them coiled within the gills, one has a couple under the skin behind its eye. Other locations include fins and randomly over the body. I feel awful for the poor critters, but do not know what to do
I'm finally feeling that drastic measures may be necessary...Quarantine, treat (with what?), and zap the tank with PP?