Bioballs will cause your nitrates to be higher.. However If you do now have enough liverock tanking out the biological media could cause some issues.. What I would try first Which I might propose and others please also give your input but I'd put out the Bioballs and wash them and monitor levels to see if it made a difference.. If you have 1.5 - 2 times your water volume in LR
that I would assume it would be safe to pull out your Bioballs SLOWLY.. Like taking out a 1/4 of them at a time... Taht would be my suggestion but I have NOT had the experience of alot of things as the others have as I am still pretty new but Well Informed... My tank currently has no media and has approx 100lbs of LR
and 15lbs of LS
.. I pulled my media out after 3 days of using it in my wet/dry.. My nitrates have stayed at 2ppm and all other levels have checked out awesome....