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I have to leave my betta fish alone for 10 days, what can I do for him to make sure he is okay while I'm gone? He has a filtered 3 gallon tank
Do I need to leave any lights on for him?
Betta fish need a regular light-dark cycle to maintain their biological rhythms, so it might be best to leave the tank light on for about 8-12 hours a day and then turn it off at night.