I got back from work and noticed I had 2 red cherrywood dead on the bottom of my tank, I then noticed my heater had failed and my tank was at 61.... Could this of killed the shrimp? All my fish are ok, and seem to be acting normal but as of yet I've not investigated the other shrimp who I'm assuming are hiding somewhere. I'm gonna wait for the water to heat up again overnight then check on them tomorrow.