I recently switched one of my tanks from a Betta tank to a shrimp tank. This tank has been up and running for 3 yrs. I added Anacharis, Anubias, 5 Marimo moss balls, Java Moss and Frogbit. They have a couple of decor pieces for molting and the water parameters are perfect. I also added a piece of a Bottom Feeder wafer one night before lights out and they didn't touch it all night so I removed it. I tried some defrosted brine shrimp tonight, but I don't know if they've eaten any or not. My problem is I've lost 5 shrimp already. I have no idea what I am doing wrong and what I can do to make sure the rest stay healthy and happy. What else can I do or what am I missing?