I recently ordered a trio of scissortail dartfish from DD. I found small white strings on the bottom of the qt tank. The biggest fish has been breathing heavily and has lost his appetite but the other two appear to be doing well. I dosed prazi two weeks into the tank. I was thinking of trying to food soak general cure. My question is using the packets, how much do I dose with the food and for how long to treat worms? Also when food soaking can I just mix it in with the food and let it sit before feeding?