To learn more about the types of filtration and filters, go to my fish care page . Temperature fluctuations can cause a problem in so little water. Since there is less than half a gallon of water, no heater, and no chiller, the AquaBabies are subject to whatever the ambient temperature might be. Above 80 degrees, these cooler water animals will also start to die from heat stress and reduced dissolved oxygen levels. So little water will change temperature in just a few minutes.
Animals can die from temperature change shock.
This lack of stability also holds for water chemistry. Since there is so little water, pH and other chemical fluctuations are much more likely. Again, this stress can kill. All of the fish that may be found in AquBabies are schooling or shoaling fish. A solitary schooling fish will be too scared to exhibit normal behavior.