- Reaction score
- More than 10 years
I am keeping my 5 *very small* zebra danios in a 2.5 gallon tank with adequate filtration (~40 gallons per hour) with gravel and filter taken from a nearly cycled tank. My question does not have to do with stocking but with heating. I bought a heater which says it is for 3-5 gallon aquariums. According to the package the heater was preset to 78°F (26°C) but the actual setting seems to be around 30°C. Is it safe to keep zebra danios at this temperature? My air conditioner comes on and off during the day, and sometimes I push the thermostat up or down a notch, and I don't want the temp. fluctuations causing the fish to stress out or die, so I would like to keep the heater in if possible.