BB cling to surfaces. So they will be on the substrate, rocks, DW, and glass. Most will be housed in the filter as they are Aerobic and love the moving water. Less than a percentage will be free floating, so a water change won't affect the cycle.
1 - 1 of 3 Posts
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.