! I didn't see that one coming! 8O
I use reef rubble as well rather than bio balls. My system has been established for well over a year, and my nitrates are 0. I have read that the bio balls have to be cleaned, or they will accumulate detrius creating problems with nitrate stability. However, if cleaning the bio balls is necessary, doesn't that disturb the baterial colonies that are currenty there?
I actually got the idea of using reef rubble from Lando. It seems to be the best natural alternative I have tried thus far, and I wouldn't change it.
Brenden - you can just take some of your lr
and break it up into little pieces and put it in your sump. I have about 30lbs in mine right now. reef rubble is the same thing, just the leftover broken pieces from the lr