Home » Community » 4 Gallon Sphere tank for assorted rainbow shrimp. Does it want a heater and in that case, any suggestions? There’s room for… 4 Gallon Sphere tank for assorted rainbow shrimp. Does it want a heater and in that case, any suggestions? There’s room for… OffensiveOnOccasion February 4, 2024 Community SaveSavedRemoved 0 Deal Score0 0 3 Deal Score0