I am sorry, but it was I who named and devise the treatment for PMD back in 2002. I thought that it is a superficial infection, most likely a protozoa. I was in communication with Barry , and donated money to his research later to see if he can ID it. In my write up on PMD, it stated this, and stated why I think his/and the biologist he works with conclusion that the tissue infection by Perkinsus was wrong. Just the simple fact that tissue infection will not response to FWD. If you read the study below, they isolated Perkinsus from both sick clams and healthy clams. They also not able to isolate Perkinsus from some sick clam and some healthy clams. It seem to me the correct conclusion should be Perkinsus is a incidental finding. This along with the fact that FWD only will treat superficial (surface) infection.
Perkinsus is a tissue infection, infection in the tissue will never be exposed to fresh water with dipping, so it will not work.
Regardless, FWD is an effective treatment for PMD.
Here is the write up resulted from Bary study.
Here is my write up:
Introduction It was almost 20 years ago when I first introduced the Fresh Water Dip (FWD) protocol for the treatment of Pinched Mantle Disease (PMD). Over the years, many reefers altered the protocol somewhat but, on the whole, it still is the only tried and true way to treat PMD, a universally...
www.reef2reef.com