Sorry for my terrible clarification. I put mine outside, in the shade, for about an hour. With tank water, aerator, and the bucket temp reaches the 83-84 range. Then temp acclimate them to your tank, then rinse them off with tank water.
Your going to be amazed a week after that treatment.. As long as you do this treatment like this. Use your tank water, Watching temp, move the furan2 water with the aerator, acclimate them back to your tank temp (float them in a bag or Tupperware bowl) and then rinse with the tank water.
These fruitloops in my avatar almost dissolved in the hands of the previous owner. Not his fault though, Japanese deep-waters have issues quite easily from temp changes, other parameter changes, bumping the container walls during shipping, etc. Once the fungus dissolving starts there was usually no return for any of my zoanthids in the past, until I used furan2. As I was buying them he told me the mother colony was rotting away.. I called him and told him how to save them and here they are in my tank and my avatar.