I don't bother rinsing the Brine Shrimp at all. I suck them out of my hatching container using a syringe and a piece of ridgid tube on the end connected with a small airline. Why everyone rinses them I have no idea. When someone has a sick Discus whats the first thing you do. Raise the temp and add salt. Dose anyone think that the little bit of salt from your Brine Shrimp Hatchery matters. Besides if you are doing water changes on the fry two or three times a day it doesn't build up anyway. Suck them out and feed them is what I do.