I do have a few dewormers. I'm just not sure which one would be most effective. I have PraziPro. I will feed it out to some shrimp them feed the seahorse in the AM. I just know there are others that I have read about. Deworming is the easiest treatment I have had to do.
As for my seahorses being WC, I'll never know. The LFS I got them from says they are captive bred. I don't believe it. With all of the diseases I've had with them, I have to believe they are wild caught. I can't imagine them being from a breeder. The first batch that she got in had parasitic isopods on them. They wouldn't come off in a FW bath so I did a formalin dip. That didn't work, so I ended up removeing about 15 - 20 of them from all different horses with a tweezers. I added wound controle to the spots I pulled them from. Talk about tramatized seahorses.
I can't imagine CB seahorses haveing the parasitic isopods on them. More likely in WC. I treated them and QT'd them as WC just to be on the safe side.