I want to take my current 29gal sump and divide it up into 3 sections instead of 2. Currently the refigium, skimmer and water from my over flow go in first section and then over my divider to the return which is kinda small. I want to up date it to 3 section. I want to keep my sandbed and leave it in the tank just make it deeper in the center. I am concerned about disrupting it and having the tank cycle and loose live stock. Any Ideas or tips.

