I recommend the club's fish trap. It works very well and eliminates a lot of the stress of catching fish. You can eliminate ich from your DT, if you let it sit fallow for 8 - 9 weeks. Use a properly calibrated refractometer on your QT and run the SG at 1.009 for the correct amount of time and never introduce a new fish to the tank w/o the proper QT. You can cycle a QT rather quickly by using the water directly from your DT. Do small, daily water changes and your fish should all make it.
If you really don't want to QT, some fish can develop an immunity to ich. You can also, feed your fish high quality food soaked in garlic and selcon to help. Offer the herbivores red, purple, and green algae and be sure to soak that in garlic and selcon as well. Cleaner wrasse and cleaner shrimp will also eat the parasite.
Hope that helps and I hope all your fish make it. Best of luck!