Be sure to keep an eye on that one you cut. If you start to see it drying out or if you see any brown gunk in it, then be sure to add some more fluid back in. For the brown gunk, make sure you rinse it out. Also, if you do add fluid or flush, be sure to leave the bottle in the incubator for a while first so that the fresh fluid is the same temperature as the incubator. You can use saline or clean bottled water. I use the bottles that I keep in the incubator to maintain stability in temperatures. Good luck! They should be pipping soon.