KOI FISH POND DAILY INSPECTION

qihangras.com/

[@GreymsView-ix8yi]

Beautiful fish my friend.

[@QihangRAS]

thanks,my friend😁

[@Ramon-tp3cv]

How does it filter the Nitrates?

[@QihangRAS]

The combi drum filter including the drum filter and biofilter tank + K5 media + UV, after drum filter remove the impurities, biofilter tank can reduce the ammonia and nitrates