Basically the title. Ill be removing a rock from my 25 gallon to make some room for coral. The rock is around 1/3 of all the rock in the tank. Wondering if there will be any issues with the sandbed being stirred up a bit, or issues with not enough bacteria. I can add biomedia in the back. Ill be adding new sand over where the rock is removed. Ask any questions, and thanks for taking the time to help!