Is any small aquarium considered a nano or is it a certain type of tank?
corally Active Member Dec 10, 2005 #1 Is any small aquarium considered a nano or is it a certain type of tank?
harial Member Dec 10, 2005 #2 tanks that are 20 gallons and under are nano tanks and tanks that are 2.5 gallons or lower are considered a pico tank. It is just that amount of water in the tank
tanks that are 20 gallons and under are nano tanks and tanks that are 2.5 gallons or lower are considered a pico tank. It is just that amount of water in the tank
