chefrepo;511190 wrote: Here is a pretty good article regarding parasitic isopods.
http://reefkeeping.com/issues/2002-05/rs/index.php">http://reefkeeping.com/issues/2002-05/rs/index.php</a>
the last paragraph gives you your options
If you notice one of these animals in your tank, and it leaves the fish, there is almost nothing that may be done to catch it. They are very fast and quite capable of avoiding a net. And if it is a pregnant female (and remember, all female isopods have brood pouches), and the brood hatches, you have [B]REAL[/B] problems. There are only three courses of action in this situation; and I truly am not jesting about these responses. The first is to remove all the fish from the tank and wait the two or three months until you are certain that all the isopods have died from starvation. The second solution is to effectively nuke the tank. Remove all live rock and discard it as the isopods may hide in it and, as some of the isopods bury in the sand, you should also remove and discard the sand.
You may, of course, take the third option and do nothing. The most likely outcome in this situation will be that the isopods will kill your fish one by one. These isopods are masterfully designed predators. Hope fervently that you never have to deal with them.[/QUOTE]
Thanks for the article as I have already read it about 10 times before you posted.