Once a week, you will change 1 gallon of saltwater and the mechanical filter. You will also clean the interior surfaces with a small acrylic cleaning magnet (Time: 15 minutes).
Every other week, you will also exchange one of the three carbon filters (Time: an additional 5 minutes).
Every three months, you will clean out the spray bar holes and the drain screen, along with the pump and check valve (Time: an additional 15 minutes).
The built in wet/dry filter will maintain your chemical & biological filtration and therefore, water quality and clarity on a daily basis. Such a stable environment is exactly what the jellies need to thrive.