You know, there is a pinned topic on colloidal silver so I would go read it (the link is at the beginning of this thread). I'm not sure about much, I just know that I scanned the topic and it's supposed to help with al lot of things, not just dropsy. But I would isolate them, just because I dunno, it seems what to do... (I know, what a great lot of help I am!)
Jollysue, I actually lost males, I had a thread going about it somehow, they were sharing that 6 gallon tank that came split 6 ways. I tore it down, I boiled the plants (they look so distorted now) I got rid of the original rocks that might have caused the whole thing. I boiled the rocks I had put in there the second time. And I used a ratio of bleach to water that I had found on the interenet...I think it was 10:1. I soaked the tank in that solution for 2-3 days. Then I washed it out really well and let it completely dry for 3 days. Then, I washed it out somemore and now I have my new DT in there...so far so good...
I lost: Carp, Ula, Bert(in my sig), Allie, and Alpha. Only 1 survived being in that tank and that's Storin. I thought I was going to lose him for so many days, but now he's up and flaring.
What a trooper. They all didn't die because of being in that tank though, Ula was constipated for over a week and Bert got ich and terrible fin rot...maybe even septicemia (although I'm not sure because I never saw it in person before). But the others were very healthy...
Good luck with your girls!
