reaction in a hyposalinity hospital tank

[h2o]

it's been almost one week since i started hyposalinity in my 20g hospital tank. i did everything as instructed at this site. Two percula clowns, both are healthy and eatting garlic soaked brine shrimp. One however, is having white films all over its body. don't know how to describe it but just pale white. the other one is fine and getting colorful. again both seems fine except they chase one another possibly due to they are same size. should i worry about the one getting real white or just wait and see? thanks

 

[beth]

It is not uncommon for fish to develop a secondary bacterial infection following a bout with ick. However, as this is a clownfish, you could also be dealing with brooklynella. It is important to get a diagnois of one or the other, as the treatments are totally different.
Bacterial infections tend to have a light greyish white slim look to it. Brooklynella is a parasite problem. Look at the gills, using a magnifying glass if possible, and see if the gills are swollen, labored breathing. Fish behavior for both diseases can be similiar, but the treatments definately are not.
Are you feeding the fish garlic soaked food? If not do so.
Additiionally, do a large water change ensuring that PH and water temp is maintained during the water change.