Quote Originally Posted by allan View Post
Mom, I think you probably negated a significant swing also by doing half, waiting a few weeks for the bacteria to get where it needed to be before doing the other half. By then the rest of your system had already compensated. Besides, with the sand, rock and HOB your bioballs probably only took care of what 20% to 30% filtration for your system? If those numbers are right, using your method you only reduced capability by 10-15%.

Just thinking out loud of course.
I think you are absolutely right. The bioballs seemed kind of neglibible compared to the rest of my filtration system and that's why I figured in my case the 50% removal- monitoring-another 50% removal should be pretty safe.
I really wouldn't be able to tell the original poster what to do because I have no idea what he has in regards to filtration.