Treating for possible internal parasites

[fixedpoint]

I have two fish that have been in QT for a few weeks that appear healthy. Next week, I'm going to begin treating them with PraziPro using two treatments over the next two weeks as a precautionary measure.

However, I also have one clownfish in the DT that recently started having long stringy white feces. He was my first fish and I did not treat him with PraziPro while in QT. He continues to eat well and appears to be healthy in every other way.

The question is should I treat him with PraziPro as well? In the DT? In the QT? If he does have internal parasites will they have already spread to the tank -- hence requiring the DT to be treated and not just the fish?

 

[Newsmyrna80]

IME Prazi isn't all that effective against internal parasites. My clown had it off and on for 10 years with no problems.

 

[fixedpoint]

Okay. As a follow up question, if a fish has internal parasites do those parasites complete part of their lifecycle outside of the fish? In other words, does the tank have the problem and not just the fish?

 

[HumbleFish]

Why not just soak fish food with metro to take care of the problem? That works pretty well for internal parasites IME.