So I was about to shut down my 5 gallon tank. Which has no more fish in it at all. But I looked a bit online about cherry and ghost shrimp and thought that could be an option. I read that certain shrimp can tolerate many temperatures. Since its a 5 gallon id rather run my heater as all the water evaporates VERY fast and causes water hardness issues if i don't do a lot of water changes. So i have a few questions. Which small shrimp would work best without a heater? Avg room temp is 72. Do they breed and populate? Do any types of small shrimp breed pretty easy? I have some live plants in it and use a plant fert sometimes. Is that a problem? I know copper is harmful to them. I have not put any plant fert in it in over a month. Anything else i should be aware of? Such as water hardness? Which small shrimp would be the best for my situation? Thanks for the input!