I Have a 29BC that has been running for about 3 years. In the chamber in the back I have an Intank media basket with filter floss and Chem pure I have another media basket that I thought of putting in the chamber and filling with bioballs. Good idea or not? Back in the day it was a good to have bioballs, now I read that it just adds nitrates to the tank? Feed back would be great. Also any good nano sites or threads you guys suggest thank you