Measure the room first
Neocaridina davidi can tolerate a broad temperature range. Aquarium Co-Op describes 60–82°F (16–28°C) as survivable and 72–76°F (22–24°C) as comfortable for cherry shrimp. These are practical guideposts, not a reason to force one exact point.
Place a reliable thermometer where it represents the tank and check it at different times of day. A room that stays steady may not need a heater; one that gets cold overnight or hot in the afternoon needs a plan for both extremes.
Understand the trade-off
Warmer water generally speeds shrimp metabolism and reproduction, while cooler conditions can slow activity and breeding. Avoid extremes and fast swings; stability is the first goal.
If heating is needed, choose equipment sized for the aquarium and use a separate thermometer to verify the result. In hot weather, a heater cannot cool water. Improve room ventilation or use a safe cooling method while keeping changes gradual.
Avoid heating by habit
A heater that is too powerful or poorly monitored can overheat a small tank. Conversely, leaving a tank unheated in a room with large seasonal drops can expose shrimp to abrupt changes.
Record the actual low and high readings for several days before buying equipment. That small check often gives a better answer than copying someone else's setup.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.