Add more plants , cut light and/or ferts until you get the right balance sometimes it can take a while to get it just right but your green water problem should subside assuming your tank does not sit in front of a sunlit window?
If so might need to relocate it or add a dark background to help block incoming light somewhat or you will have algae issues.
You are definitely not over filtered by any means even with the HOB and the Fluval 305 so keep up the good practice of weekly water changes and when you get the plant/fert/photo period balance right you should see crystal clear water.
If so might need to relocate it or add a dark background to help block incoming light somewhat or you will have algae issues.
You are definitely not over filtered by any means even with the HOB and the Fluval 305 so keep up the good practice of weekly water changes and when you get the plant/fert/photo period balance right you should see crystal clear water.