Sorry to bring this topic up , again! * But I wanted mass opinion before doing something stupid alone, that way I could blame everyone, not just me!! *
Nooo...just don't think my system can do ok without the bio-balls. I only have about 60lbs of rock, 80lbs of sand, in my tank. (75gal AGA) While it looks like alot, theres always room for more, just no more money!!

*
should I leave the bio-balls in place still, or would I be better as the tank is without them ?? I still get nitrates at about 20 or so...and the tanks about 6-8 months old now....
thanks all!
Scoffer