I’m starting a new shrimp system also. How I drip the new water in is with a cleaned out plastic gallon milk jug with a small hole poked into the bottom edge. I then just fill that in my water change bucket and let it sit o. The rim of the tank. Let gravity do the job and I don’t have to watch it.
Mark’s shrimp suggested feeding food that is basically powder so it falls all over the tank.
I haven’t had any losses in this newest set up. Good luck 👍