No need to worry when aro do not eat for few days. It can be related to the tank water parameter. Suggest you do a daily 25% water change for one week without feeding. Start feeding again after one week and monitor your aro feeding habit. If possible continue daily 25% water change for another week and then follow by weekly once 30% water change to maintain a good water parameter. Also don't forget to wash and clean your filter system as well. It is better to use the 25% drain out water from the tank to wash and clean your filters.
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